Question

7:56::9:? help me friends

Answer 1

Let the last ratio be x

So we have

7:56::9:x

We know that

Product of extreme = Product of mean

Where extreme are the extreme left and right ratios and mean are middle two ratios.

So by using this property we have

7x = 56 × 9
$7x = 56 \times 9 \\ = > x = \frac{56 \times 9}{7} \\ = > x = 8 \times 9 \\ = > x = 72$
Hence, required ratio is 72
So the proportion is

7:56::9:72


Hope it helps dear friend ☺️✌️