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Finding the Fourth Proportional to 85,302.43, 127,949.03 and 26,138.27

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Solution

The fourth proportional to 85,302.43, 127,949.03 and 26,138.27 is: 39,205.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,302.43 : 127,949.03 = 26,138.27 : x
  2. Step 2: Convert to fraction form
    85,302.43/127,949.03 = 26,138.27/x
  3. Step 3: Cross multiply
    85,302.43x = 127,949.03 × 26,138.27
  4. Step 4: Simplify right side
    85,302.43x = 3,344,366,161.69
  5. Step 5: Solve for x
    x = 3,344,366,161.69/85,302.43
  6. Step 6: Final answer
    x = 39,205.99

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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.