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Finding the Fourth Proportional to 85,305.79, 127,854.92 and 60,353.04

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Solution

The fourth proportional to 85,305.79, 127,854.92 and 60,353.04 is: 90,456.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,305.79 : 127,854.92 = 60,353.04 : x
  2. Step 2: Convert to fraction form
    85,305.79/127,854.92 = 60,353.04/x
  3. Step 3: Cross multiply
    85,305.79x = 127,854.92 × 60,353.04
  4. Step 4: Simplify right side
    85,305.79x = 7,716,433,100.96
  5. Step 5: Solve for x
    x = 7,716,433,100.96/85,305.79
  6. Step 6: Final answer
    x = 90,456.15

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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.