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Finding the Fourth Proportional to 87,737.60, 131,703.60 and 54,495.20

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Solution

The fourth proportional to 87,737.60, 131,703.60 and 54,495.20 is: 81,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,737.60 : 131,703.60 = 54,495.20 : x
  2. Step 2: Convert to fraction form
    87,737.60/131,703.60 = 54,495.20/x
  3. Step 3: Cross multiply
    87,737.60x = 131,703.60 × 54,495.20
  4. Step 4: Simplify right side
    87,737.60x = 7,177,214,022.72
  5. Step 5: Solve for x
    x = 7,177,214,022.72/87,737.60
  6. Step 6: Final answer
    x = 81,803.17

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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.