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Finding the Fourth Proportional to 85,236.56, 127,923.32 and 38,493.52

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Solution

The fourth proportional to 85,236.56, 127,923.32 and 38,493.52 is: 57,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,236.56 : 127,923.32 = 38,493.52 : x
  2. Step 2: Convert to fraction form
    85,236.56/127,923.32 = 38,493.52/x
  3. Step 3: Cross multiply
    85,236.56x = 127,923.32 × 38,493.52
  4. Step 4: Simplify right side
    85,236.56x = 4,924,218,876.89
  5. Step 5: Solve for x
    x = 4,924,218,876.89/85,236.56
  6. Step 6: Final answer
    x = 57,771.21

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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.