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Finding the Fourth Proportional to 85,246.29, 127,871.87 and 26,080.65

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Solution

The fourth proportional to 85,246.29, 127,871.87 and 26,080.65 is: 39,121.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,246.29 : 127,871.87 = 26,080.65 : x
  2. Step 2: Convert to fraction form
    85,246.29/127,871.87 = 26,080.65/x
  3. Step 3: Cross multiply
    85,246.29x = 127,871.87 × 26,080.65
  4. Step 4: Simplify right side
    85,246.29x = 3,334,981,355.91
  5. Step 5: Solve for x
    x = 3,334,981,355.91/85,246.29
  6. Step 6: Final answer
    x = 39,121.72

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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.