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Finding the Fourth Proportional to 83,607.80, 125,585.10 and 67,615.29

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Solution

The fourth proportional to 83,607.80, 125,585.10 and 67,615.29 is: 101,563.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,607.80 : 125,585.10 = 67,615.29 : x
  2. Step 2: Convert to fraction form
    83,607.80/125,585.10 = 67,615.29/x
  3. Step 3: Cross multiply
    83,607.80x = 125,585.10 × 67,615.29
  4. Step 4: Simplify right side
    83,607.80x = 8,491,472,956.18
  5. Step 5: Solve for x
    x = 8,491,472,956.18/83,607.80
  6. Step 6: Final answer
    x = 101,563.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.