Home / 71,542.20-107,328.66-21,618.36

Finding the Fourth Proportional to 71,542.20, 107,328.66 and 21,618.36

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Solution

The fourth proportional to 71,542.20, 107,328.66 and 21,618.36 is: 32,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,542.20 : 107,328.66 = 21,618.36 : x
  2. Step 2: Convert to fraction form
    71,542.20/107,328.66 = 21,618.36/x
  3. Step 3: Cross multiply
    71,542.20x = 107,328.66 × 21,618.36
  4. Step 4: Simplify right side
    71,542.20x = 2,320,269,610.20
  5. Step 5: Solve for x
    x = 2,320,269,610.20/71,542.20
  6. Step 6: Final answer
    x = 32,432.18

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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.