Home / 87,607.40-131,411.10-77,930.60

Finding the Fourth Proportional to 87,607.40, 131,411.10 and 77,930.60

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Solution

The fourth proportional to 87,607.40, 131,411.10 and 77,930.60 is: 116,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,607.40 : 131,411.10 = 77,930.60 : x
  2. Step 2: Convert to fraction form
    87,607.40/131,411.10 = 77,930.60/x
  3. Step 3: Cross multiply
    87,607.40x = 131,411.10 × 77,930.60
  4. Step 4: Simplify right side
    87,607.40x = 10,240,945,869.66
  5. Step 5: Solve for x
    x = 10,240,945,869.66/87,607.40
  6. Step 6: Final answer
    x = 116,895.90

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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.