Home / 87,251,572.86-120,362,891.67-66,589,146.78

Finding the Fourth Proportional to 87,251,572.86, 120,362,891.67 and 66,589,146.78

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Solution

The fourth proportional to 87,251,572.86, 120,362,891.67 and 66,589,146.78 is: 91,859,229.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,251,572.86 : 120,362,891.67 = 66,589,146.78 : x
  2. Step 2: Convert to fraction form
    87,251,572.86/120,362,891.67 = 66,589,146.78/x
  3. Step 3: Cross multiply
    87,251,572.86x = 120,362,891.67 × 66,589,146.78
  4. Step 4: Simplify right side
    87,251,572.86x = 8,014,862,260,278,870
  5. Step 5: Solve for x
    x = 8,014,862,260,278,870/87,251,572.86
  6. Step 6: Final answer
    x = 91,859,229.55

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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.