What proportion is 72 out of 90?

What proportion is 72 out of 90? In other words, what proportion is 72 out of 90 as a percentage? More specifically, if 72 is the part, and 90 is the whole, what will the part be if the whole is 100?

Below is a more straightforward illustration showing you what we mean when we say we want find the proportion of 72 out of 90 as a percentage:

72 out of 90 = P out of 100

The above problem can be made into an equation and can be solved like this:

P/100 = 72/90
P = 7200/90
P = 80

Now we know that the proportion of 72 out of 90 is the same as 80 out of 100, which means that we have our answer:

What proportion is 72 out of 90? = 80%

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What proportion is 72 out of 91?
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