Home / 87,631.17-131,321.75-67,564.77

Finding the Fourth Proportional to 87,631.17, 131,321.75 and 67,564.77

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Solution

The fourth proportional to 87,631.17, 131,321.75 and 67,564.77 is: 101,250.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.17 : 131,321.75 = 67,564.77 : x
  2. Step 2: Convert to fraction form
    87,631.17/131,321.75 = 67,564.77/x
  3. Step 3: Cross multiply
    87,631.17x = 131,321.75 × 67,564.77
  4. Step 4: Simplify right side
    87,631.17x = 8,872,723,496.92
  5. Step 5: Solve for x
    x = 8,872,723,496.92/87,631.17
  6. Step 6: Final answer
    x = 101,250.77

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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.