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Finding the Fourth Proportional to 71,612.68, 107,367.92 and 33,640.76

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Solution

The fourth proportional to 71,612.68, 107,367.92 and 33,640.76 is: 50,437.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.68 : 107,367.92 = 33,640.76 : x
  2. Step 2: Convert to fraction form
    71,612.68/107,367.92 = 33,640.76/x
  3. Step 3: Cross multiply
    71,612.68x = 107,367.92 × 33,640.76
  4. Step 4: Simplify right side
    71,612.68x = 3,611,937,723.38
  5. Step 5: Solve for x
    x = 3,611,937,723.38/71,612.68
  6. Step 6: Final answer
    x = 50,437.13

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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.