Home / 87,127.71-120,217.87-56,957.43

Finding the Fourth Proportional to 87,127.71, 120,217.87 and 56,957.43

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Solution

The fourth proportional to 87,127.71, 120,217.87 and 56,957.43 is: 78,589.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,127.71 : 120,217.87 = 56,957.43 : x
  2. Step 2: Convert to fraction form
    87,127.71/120,217.87 = 56,957.43/x
  3. Step 3: Cross multiply
    87,127.71x = 120,217.87 × 56,957.43
  4. Step 4: Simplify right side
    87,127.71x = 6,847,300,915.27
  5. Step 5: Solve for x
    x = 6,847,300,915.27/87,127.71
  6. Step 6: Final answer
    x = 78,589.24

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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.