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Finding the Fourth Proportional to 41,129.20, 61,693.80 and 21,446.20

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Solution

The fourth proportional to 41,129.20, 61,693.80 and 21,446.20 is: 32,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,129.20 : 61,693.80 = 21,446.20 : x
  2. Step 2: Convert to fraction form
    41,129.20/61,693.80 = 21,446.20/x
  3. Step 3: Cross multiply
    41,129.20x = 61,693.80 × 21,446.20
  4. Step 4: Simplify right side
    41,129.20x = 1,323,097,573.56
  5. Step 5: Solve for x
    x = 1,323,097,573.56/41,129.20
  6. Step 6: Final answer
    x = 32,169.30

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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.