Finding the Fourth Proportional to 72,894,051.87, 100,593,972.68 and 39,856,433.10
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Solution
The fourth proportional to 72,894,051.87, 100,593,972.68 and 39,856,433.10 is: 55,001,976.70
Step by Step Solution
- Step 1: Write the proportion equation
72,894,051.87 : 100,593,972.68 = 39,856,433.10 : x - Step 2: Convert to fraction form
72,894,051.87/100,593,972.68 = 39,856,433.10/x - Step 3: Cross multiply
72,894,051.87x = 100,593,972.68 × 39,856,433.10 - Step 4: Simplify right side
72,894,051.87x = 4,009,316,942,031,131 - Step 5: Solve for x
x = 4,009,316,942,031,131/72,894,051.87 - Step 6: Final answer
x = 55,001,976.70
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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.