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Finding the Fourth Proportional to 57,481.18, 86,221.80 and 15,928.18

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Solution

The fourth proportional to 57,481.18, 86,221.80 and 15,928.18 is: 23,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,481.18 : 86,221.80 = 15,928.18 : x
  2. Step 2: Convert to fraction form
    57,481.18/86,221.80 = 15,928.18/x
  3. Step 3: Cross multiply
    57,481.18x = 86,221.80 × 15,928.18
  4. Step 4: Simplify right side
    57,481.18x = 1,373,356,350.32
  5. Step 5: Solve for x
    x = 1,373,356,350.32/57,481.18
  6. Step 6: Final answer
    x = 23,892.28

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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.