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Finding the Fourth Proportional to 71,423.76, 107,121.72 and 52,528.08

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Solution

The fourth proportional to 71,423.76, 107,121.72 and 52,528.08 is: 78,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,423.76 : 107,121.72 = 52,528.08 : x
  2. Step 2: Convert to fraction form
    71,423.76/107,121.72 = 52,528.08/x
  3. Step 3: Cross multiply
    71,423.76x = 107,121.72 × 52,528.08
  4. Step 4: Simplify right side
    71,423.76x = 5,626,898,277.90
  5. Step 5: Solve for x
    x = 5,626,898,277.90/71,423.76
  6. Step 6: Final answer
    x = 78,781.88

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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.