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Finding the Fourth Proportional to 85,305.87, 127,954.17 and 26,141.72

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Solution

The fourth proportional to 85,305.87, 127,954.17 and 26,141.72 is: 39,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,305.87 : 127,954.17 = 26,141.72 : x
  2. Step 2: Convert to fraction form
    85,305.87/127,954.17 = 26,141.72/x
  3. Step 3: Cross multiply
    85,305.87x = 127,954.17 × 26,141.72
  4. Step 4: Simplify right side
    85,305.87x = 3,344,941,445.20
  5. Step 5: Solve for x
    x = 3,344,941,445.20/85,305.87
  6. Step 6: Final answer
    x = 39,211.15

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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.