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Finding the Fourth Proportional to 87,662.62, 131,511.21 and 28,494.46

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Solution

The fourth proportional to 87,662.62, 131,511.21 and 28,494.46 is: 42,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,662.62 : 131,511.21 = 28,494.46 : x
  2. Step 2: Convert to fraction form
    87,662.62/131,511.21 = 28,494.46/x
  3. Step 3: Cross multiply
    87,662.62x = 131,511.21 × 28,494.46
  4. Step 4: Simplify right side
    87,662.62x = 3,747,340,912.90
  5. Step 5: Solve for x
    x = 3,747,340,912.90/87,662.62
  6. Step 6: Final answer
    x = 42,747.31

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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.