Home / 87,319.31-120,500.16-49,079.84

Finding the Fourth Proportional to 87,319.31, 120,500.16 and 49,079.84

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Solution

The fourth proportional to 87,319.31, 120,500.16 and 49,079.84 is: 67,729.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319.31 : 120,500.16 = 49,079.84 : x
  2. Step 2: Convert to fraction form
    87,319.31/120,500.16 = 49,079.84/x
  3. Step 3: Cross multiply
    87,319.31x = 120,500.16 × 49,079.84
  4. Step 4: Simplify right side
    87,319.31x = 5,914,128,572.77
  5. Step 5: Solve for x
    x = 5,914,128,572.77/87,319.31
  6. Step 6: Final answer
    x = 67,729.91

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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.