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Finding the Fourth Proportional to 67,230.29, 100,711.78 and 61,719.05

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Solution

The fourth proportional to 67,230.29, 100,711.78 and 61,719.05 is: 92,455.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,230.29 : 100,711.78 = 61,719.05 : x
  2. Step 2: Convert to fraction form
    67,230.29/100,711.78 = 61,719.05/x
  3. Step 3: Cross multiply
    67,230.29x = 100,711.78 × 61,719.05
  4. Step 4: Simplify right side
    67,230.29x = 6,215,835,385.41
  5. Step 5: Solve for x
    x = 6,215,835,385.41/67,230.29
  6. Step 6: Final answer
    x = 92,455.88

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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.