Home / 87,312.20-120,375.92-57,044.93

Finding the Fourth Proportional to 87,312.20, 120,375.92 and 57,044.93

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Solution

The fourth proportional to 87,312.20, 120,375.92 and 57,044.93 is: 78,646.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,312.20 : 120,375.92 = 57,044.93 : x
  2. Step 2: Convert to fraction form
    87,312.20/120,375.92 = 57,044.93/x
  3. Step 3: Cross multiply
    87,312.20x = 120,375.92 × 57,044.93
  4. Step 4: Simplify right side
    87,312.20x = 6,866,835,470.82
  5. Step 5: Solve for x
    x = 6,866,835,470.82/87,312.20
  6. Step 6: Final answer
    x = 78,646.92

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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.