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Finding the Fourth Proportional to 71,231.81, 106,814.90 and 40,067.06

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Solution

The fourth proportional to 71,231.81, 106,814.90 and 40,067.06 is: 60,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,231.81 : 106,814.90 = 40,067.06 : x
  2. Step 2: Convert to fraction form
    71,231.81/106,814.90 = 40,067.06/x
  3. Step 3: Cross multiply
    71,231.81x = 106,814.90 × 40,067.06
  4. Step 4: Simplify right side
    71,231.81x = 4,279,758,573.29
  5. Step 5: Solve for x
    x = 4,279,758,573.29/71,231.81
  6. Step 6: Final answer
    x = 60,082.13

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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.