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Finding the Fourth Proportional to 87,502.60, 131,318.70 and 57,910.60

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Solution

The fourth proportional to 87,502.60, 131,318.70 and 57,910.60 is: 86,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,502.60 : 131,318.70 = 57,910.60 : x
  2. Step 2: Convert to fraction form
    87,502.60/131,318.70 = 57,910.60/x
  3. Step 3: Cross multiply
    87,502.60x = 131,318.70 × 57,910.60
  4. Step 4: Simplify right side
    87,502.60x = 7,604,744,708.22
  5. Step 5: Solve for x
    x = 7,604,744,708.22/87,502.60
  6. Step 6: Final answer
    x = 86,908.79

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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.