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Finding the Fourth Proportional to 89,839.70, 125,542.30 and 89,839.70

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Solution

The fourth proportional to 89,839.70, 125,542.30 and 89,839.70 is: 125,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,839.70 : 125,542.30 = 89,839.70 : x
  2. Step 2: Convert to fraction form
    89,839.70/125,542.30 = 89,839.70/x
  3. Step 3: Cross multiply
    89,839.70x = 125,542.30 × 89,839.70
  4. Step 4: Simplify right side
    89,839.70x = 11,278,682,569.31
  5. Step 5: Solve for x
    x = 11,278,682,569.31/89,839.70
  6. Step 6: Final answer
    x = 125,542.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.