Home / 87,461.20-120,753.48-67,280.86

Finding the Fourth Proportional to 87,461.20, 120,753.48 and 67,280.86

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Solution

The fourth proportional to 87,461.20, 120,753.48 and 67,280.86 is: 92,891.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,461.20 : 120,753.48 = 67,280.86 : x
  2. Step 2: Convert to fraction form
    87,461.20/120,753.48 = 67,280.86/x
  3. Step 3: Cross multiply
    87,461.20x = 120,753.48 × 67,280.86
  4. Step 4: Simplify right side
    87,461.20x = 8,124,397,982.39
  5. Step 5: Solve for x
    x = 8,124,397,982.39/87,461.20
  6. Step 6: Final answer
    x = 92,891.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.