The three$-$year zero rate is $2\%$ and the four$-$year zero rate is $1\mathrm{.}75\%($both continuously compounded$).$ What is the forward rate for the fourth year?The three$-$year zero rate is $2\%$ and the four$-$year zero rate is $1\mathrm{.}75\%($both continuously compounded$).$ What is the forward rate for the fourth year?