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Finding the Fourth Proportional to 71,230.80, 106,700.40 and 36,190.20

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Solution

The fourth proportional to 71,230.80, 106,700.40 and 36,190.20 is: 54,211.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,230.80 : 106,700.40 = 36,190.20 : x
  2. Step 2: Convert to fraction form
    71,230.80/106,700.40 = 36,190.20/x
  3. Step 3: Cross multiply
    71,230.80x = 106,700.40 × 36,190.20
  4. Step 4: Simplify right side
    71,230.80x = 3,861,508,816.08
  5. Step 5: Solve for x
    x = 3,861,508,816.08/71,230.80
  6. Step 6: Final answer
    x = 54,211.22

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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.