Finding the Fourth Proportional to 72,419,474.71, 99,940,769.19 and 39,381,656.09
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Solution
The fourth proportional to 72,419,474.71, 99,940,769.19 and 39,381,656.09 is: 54,347,715.41
Step by Step Solution
- Step 1: Write the proportion equation
72,419,474.71 : 99,940,769.19 = 39,381,656.09 : x - Step 2: Convert to fraction form
72,419,474.71/99,940,769.19 = 39,381,656.09/x - Step 3: Cross multiply
72,419,474.71x = 99,940,769.19 × 39,381,656.09 - Step 4: Simplify right side
72,419,474.71x = 3,935,833,001,610,648 - Step 5: Solve for x
x = 3,935,833,001,610,648/72,419,474.71 - Step 6: Final answer
x = 54,347,715.41
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.