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Finding the Fourth Proportional to 87,402.60, 131,168.70 and 57,810.60

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Solution

The fourth proportional to 87,402.60, 131,168.70 and 57,810.60 is: 86,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,402.60 : 131,168.70 = 57,810.60 : x
  2. Step 2: Convert to fraction form
    87,402.60/131,168.70 = 57,810.60/x
  3. Step 3: Cross multiply
    87,402.60x = 131,168.70 × 57,810.60
  4. Step 4: Simplify right side
    87,402.60x = 7,582,941,248.22
  5. Step 5: Solve for x
    x = 7,582,941,248.22/87,402.60
  6. Step 6: Final answer
    x = 86,758.76

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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.