Finding the Fourth Proportional to 31,419,565.55, 47,128,875.32 and 14,135,560.91
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Solution
The fourth proportional to 31,419,565.55, 47,128,875.32 and 14,135,560.91 is: 21,203,128.56
Step by Step Solution
- Step 1: Write the proportion equation
31,419,565.55 : 47,128,875.32 = 14,135,560.91 : x - Step 2: Convert to fraction form
31,419,565.55/47,128,875.32 = 14,135,560.91/x - Step 3: Cross multiply
31,419,565.55x = 47,128,875.32 × 14,135,560.91 - Step 4: Simplify right side
31,419,565.55x = 666,193,087,470,011.38 - Step 5: Solve for x
x = 666,193,087,470,011.38/31,419,565.55 - Step 6: Final answer
x = 21,203,128.56
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.