Home / 87,421.52-131,190.60-45,340.40

Finding the Fourth Proportional to 87,421.52, 131,190.60 and 45,340.40

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Solution

The fourth proportional to 87,421.52, 131,190.60 and 45,340.40 is: 68,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.52 : 131,190.60 = 45,340.40 : x
  2. Step 2: Convert to fraction form
    87,421.52/131,190.60 = 45,340.40/x
  3. Step 3: Cross multiply
    87,421.52x = 131,190.60 × 45,340.40
  4. Step 4: Simplify right side
    87,421.52x = 5,948,234,280.24
  5. Step 5: Solve for x
    x = 5,948,234,280.24/87,421.52
  6. Step 6: Final answer
    x = 68,040.85

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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.