Finding the Fourth Proportional to 72,330,880.50, 99,816,653.97 and 39,737,932.02
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Solution
The fourth proportional to 72,330,880.50, 99,816,653.97 and 39,737,932.02 is: 54,838,367.55
Step by Step Solution
- Step 1: Write the proportion equation
72,330,880.50 : 99,816,653.97 = 39,737,932.02 : x - Step 2: Convert to fraction form
72,330,880.50/99,816,653.97 = 39,737,932.02/x - Step 3: Cross multiply
72,330,880.50x = 99,816,653.97 × 39,737,932.02 - Step 4: Simplify right side
72,330,880.50x = 3,966,507,409,923,723.50 - Step 5: Solve for x
x = 3,966,507,409,923,723.50/72,330,880.50 - Step 6: Final answer
x = 54,838,367.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.