Home / 87,909.30-121,369.86-67,727.88

Finding the Fourth Proportional to 87,909.30, 121,369.86 and 67,727.88

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Solution

The fourth proportional to 87,909.30, 121,369.86 and 67,727.88 is: 93,506.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.30 : 121,369.86 = 67,727.88 : x
  2. Step 2: Convert to fraction form
    87,909.30/121,369.86 = 67,727.88/x
  3. Step 3: Cross multiply
    87,909.30x = 121,369.86 × 67,727.88
  4. Step 4: Simplify right side
    87,909.30x = 8,220,123,313.70
  5. Step 5: Solve for x
    x = 8,220,123,313.70/87,909.30
  6. Step 6: Final answer
    x = 93,506.87

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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.