Home / 87,756.72-121,115.28-67,597.44

Finding the Fourth Proportional to 87,756.72, 121,115.28 and 67,597.44

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Solution

The fourth proportional to 87,756.72, 121,115.28 and 67,597.44 is: 93,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,756.72 : 121,115.28 = 67,597.44 : x
  2. Step 2: Convert to fraction form
    87,756.72/121,115.28 = 67,597.44/x
  3. Step 3: Cross multiply
    87,756.72x = 121,115.28 × 67,597.44
  4. Step 4: Simplify right side
    87,756.72x = 8,187,082,872.88
  5. Step 5: Solve for x
    x = 8,187,082,872.88/87,756.72
  6. Step 6: Final answer
    x = 93,292.95

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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.