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Finding the Fourth Proportional to 71,866.38, 99,174.29 and 40,034.60

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Solution

The fourth proportional to 71,866.38, 99,174.29 and 40,034.60 is: 55,247.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,866.38 : 99,174.29 = 40,034.60 : x
  2. Step 2: Convert to fraction form
    71,866.38/99,174.29 = 40,034.60/x
  3. Step 3: Cross multiply
    71,866.38x = 99,174.29 × 40,034.60
  4. Step 4: Simplify right side
    71,866.38x = 3,970,402,634.65
  5. Step 5: Solve for x
    x = 3,970,402,634.65/71,866.38
  6. Step 6: Final answer
    x = 55,247.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.