Ratio of 42 to 81 (42:81)

Ratio of 42 to 81

A ratio of 42 to 81 can be written as 42 to 81, 42:81, or 42/81. Furthermore, 42 and 81 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.

A ratio of 42 to 81 simply means that for every 42 of something, there are 81 of something else, with a total of 123.

In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 42 to 81. In other words, we will calculate the corresponding equivalent ratio of 42:81 for you.

To calculate the left side of the ratio, our calculator multiplies the right side by 42 and then divides the product by 81. To calculate the right side of the ratio, our calculator multiplies the left side by 81 and then divides the product by 42. Answers are rounded to two decimals if necessary.

Below is a list of equivalent ratios of 42:81 that we created using our 42:81 ratio calculator above.

14:27

28:54

42:81

56:108

70:135

84:162

98:189

112:216

126:243

140:270

154:297

168:324

We have also created a pie chart for you to put 42:81 ratio in perspective. To do so, we divided a pie into 123 pieces and then colored 42 pieces green and 81 pieces blue. The pie will look exactly the same using any equivalent ratio of 42:81.

42 to 81 pie ratio

The green part of the pie covers 34.15% and the blue part covers 65.85%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:

(42 / 123)×100 ≈ 34.15
(81 / 123)×100 ≈ 65.85

In fractional terms, 42/81 of the pie above is colored in green. This means that the ratio of 42 to 81 or 42:81 can also be expressed as a fraction, where the 42 to the left of the colon is the numerator and the 81 to the right of the colon is the denominator:

42:81 = 42/81

Ratio is often used when defining rectangles in width:height format. Width and height can be feet, inches, centimeters, or any other kind of length. With a ratio of 42 to 81, the width is 42 and the height is 81. Below is a picture of what a rectangle with a ratio of 42:81 looks like.

42 to 81 pie rectangle

Since the simplest form of the fraction 42/81 is 14/27, the simplest form of the ratio 42:81 is also 14:27.

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Ratio of 42 to 82
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