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Finding the Fourth Proportional to 87,435.60, 131,250.60 and 54,193.20

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Solution

The fourth proportional to 87,435.60, 131,250.60 and 54,193.20 is: 81,350.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,435.60 : 131,250.60 = 54,193.20 : x
  2. Step 2: Convert to fraction form
    87,435.60/131,250.60 = 54,193.20/x
  3. Step 3: Cross multiply
    87,435.60x = 131,250.60 × 54,193.20
  4. Step 4: Simplify right side
    87,435.60x = 7,112,890,015.92
  5. Step 5: Solve for x
    x = 7,112,890,015.92/87,435.60
  6. Step 6: Final answer
    x = 81,350.05

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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.