Home / 87,931.30-131,758.62-67,989.50

Finding the Fourth Proportional to 87,931.30, 131,758.62 and 67,989.50

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Solution

The fourth proportional to 87,931.30, 131,758.62 and 67,989.50 is: 101,877.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,931.30 : 131,758.62 = 67,989.50 : x
  2. Step 2: Convert to fraction form
    87,931.30/131,758.62 = 67,989.50/x
  3. Step 3: Cross multiply
    87,931.30x = 131,758.62 × 67,989.50
  4. Step 4: Simplify right side
    87,931.30x = 8,958,202,694.49
  5. Step 5: Solve for x
    x = 8,958,202,694.49/87,931.30
  6. Step 6: Final answer
    x = 101,877.29

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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.