Home / 87,640.52-131,408.12-34,268.91

Finding the Fourth Proportional to 87,640.52, 131,408.12 and 34,268.91

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Solution

The fourth proportional to 87,640.52, 131,408.12 and 34,268.91 is: 51,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,640.52 : 131,408.12 = 34,268.91 : x
  2. Step 2: Convert to fraction form
    87,640.52/131,408.12 = 34,268.91/x
  3. Step 3: Cross multiply
    87,640.52x = 131,408.12 × 34,268.91
  4. Step 4: Simplify right side
    87,640.52x = 4,503,212,866.20
  5. Step 5: Solve for x
    x = 4,503,212,866.20/87,640.52
  6. Step 6: Final answer
    x = 51,382.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.