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Finding the Fourth Proportional to 57,471.52, 86,213.28 and 15,918.52

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Solution

The fourth proportional to 57,471.52, 86,213.28 and 15,918.52 is: 23,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,471.52 : 86,213.28 = 15,918.52 : x
  2. Step 2: Convert to fraction form
    57,471.52/86,213.28 = 15,918.52/x
  3. Step 3: Cross multiply
    57,471.52x = 86,213.28 × 15,918.52
  4. Step 4: Simplify right side
    57,471.52x = 1,372,387,821.95
  5. Step 5: Solve for x
    x = 1,372,387,821.95/57,471.52
  6. Step 6: Final answer
    x = 23,879.44

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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.