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Finding the Fourth Proportional to 87,401.70, 131,102.55 and 73,404.90

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Solution

The fourth proportional to 87,401.70, 131,102.55 and 73,404.90 is: 110,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,401.70 : 131,102.55 = 73,404.90 : x
  2. Step 2: Convert to fraction form
    87,401.70/131,102.55 = 73,404.90/x
  3. Step 3: Cross multiply
    87,401.70x = 131,102.55 × 73,404.90
  4. Step 4: Simplify right side
    87,401.70x = 9,623,569,572.50
  5. Step 5: Solve for x
    x = 9,623,569,572.50/87,401.70
  6. Step 6: Final answer
    x = 110,107.35

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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.