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Finding the Fourth Proportional to 71,227.28, 106,938.12 and 36,191.72

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Solution

The fourth proportional to 71,227.28, 106,938.12 and 36,191.72 is: 54,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,227.28 : 106,938.12 = 36,191.72 : x
  2. Step 2: Convert to fraction form
    71,227.28/106,938.12 = 36,191.72/x
  3. Step 3: Cross multiply
    71,227.28x = 106,938.12 × 36,191.72
  4. Step 4: Simplify right side
    71,227.28x = 3,870,274,496.37
  5. Step 5: Solve for x
    x = 3,870,274,496.37/71,227.28
  6. Step 6: Final answer
    x = 54,336.97

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1.5x scale

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.