Monaco is about 45 times smaller than Fort Lauderdale.

Fort Lauderdale (excluding the city's 9.9 sq km of water area) is approximately 90 sq km, while Monaco is approximately 2 sq km, making Monaco 2.22% the size of Fort Lauderdale.
Tip: This to-scale comparison of Fort Lauderdale vs. Monaco uses the Mercator projection, which distorts the size of regions near the poles.