Yes. They would be proportional. A comparison in this instance would be proportional if there was some relation between them. Let's look at them :
[tex] \frac{48}{9} [/tex] and [tex] \frac{16}{3} [/tex]
Once you divided 48 by 16, you would get 3, which implies that 48 divided by 3 is 16. So in the same time, you would have to do the same to the denominator, which you do to the numerator. 9 divided by 3 is 3.
This makes the relationship proportional.
