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Finding the Fourth Proportional to 85,235.56, 127,921.82 and 38,492.52

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Solution

The fourth proportional to 85,235.56, 127,921.82 and 38,492.52 is: 57,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235.56 : 127,921.82 = 38,492.52 : x
  2. Step 2: Convert to fraction form
    85,235.56/127,921.82 = 38,492.52/x
  3. Step 3: Cross multiply
    85,235.56x = 127,921.82 × 38,492.52
  4. Step 4: Simplify right side
    85,235.56x = 4,924,033,214.79
  5. Step 5: Solve for x
    x = 4,924,033,214.79/85,235.56
  6. Step 6: Final answer
    x = 57,769.71

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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.