Home / 71,972.85-99,349.92-56,619.66

Finding the Fourth Proportional to 71,972.85, 99,349.92 and 56,619.66

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Solution

The fourth proportional to 71,972.85, 99,349.92 and 56,619.66 is: 78,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,972.85 : 99,349.92 = 56,619.66 : x
  2. Step 2: Convert to fraction form
    71,972.85/99,349.92 = 56,619.66/x
  3. Step 3: Cross multiply
    71,972.85x = 99,349.92 × 56,619.66
  4. Step 4: Simplify right side
    71,972.85x = 5,625,158,691.43
  5. Step 5: Solve for x
    x = 5,625,158,691.43/71,972.85
  6. Step 6: Final answer
    x = 78,156.68

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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.