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Finding the Fourth Proportional to 87,503.60, 131,320.20 and 57,911.60

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Solution

The fourth proportional to 87,503.60, 131,320.20 and 57,911.60 is: 86,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,503.60 : 131,320.20 = 57,911.60 : x
  2. Step 2: Convert to fraction form
    87,503.60/131,320.20 = 57,911.60/x
  3. Step 3: Cross multiply
    87,503.60x = 131,320.20 × 57,911.60
  4. Step 4: Simplify right side
    87,503.60x = 7,604,962,894.32
  5. Step 5: Solve for x
    x = 7,604,962,894.32/87,503.60
  6. Step 6: Final answer
    x = 86,910.29

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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.