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Finding the Fourth Proportional to 87,617.60, 131,523.60 and 54,375.20

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Solution

The fourth proportional to 87,617.60, 131,523.60 and 54,375.20 is: 81,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,617.60 : 131,523.60 = 54,375.20 : x
  2. Step 2: Convert to fraction form
    87,617.60/131,523.60 = 54,375.20/x
  3. Step 3: Cross multiply
    87,617.60x = 131,523.60 × 54,375.20
  4. Step 4: Simplify right side
    87,617.60x = 7,151,622,054.72
  5. Step 5: Solve for x
    x = 7,151,622,054.72/87,617.60
  6. Step 6: Final answer
    x = 81,623.12

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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.