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Finding the Fourth Proportional to 87,352.70, 131,029.05 and 55,859.90

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Solution

The fourth proportional to 87,352.70, 131,029.05 and 55,859.90 is: 83,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,352.70 : 131,029.05 = 55,859.90 : x
  2. Step 2: Convert to fraction form
    87,352.70/131,029.05 = 55,859.90/x
  3. Step 3: Cross multiply
    87,352.70x = 131,029.05 × 55,859.90
  4. Step 4: Simplify right side
    87,352.70x = 7,319,269,630.10
  5. Step 5: Solve for x
    x = 7,319,269,630.10/87,352.70
  6. Step 6: Final answer
    x = 83,789.85

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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.