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Finding the Fourth Proportional to 89,885.73, 134,618.49 and 71,039.27

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Solution

The fourth proportional to 89,885.73, 134,618.49 and 71,039.27 is: 106,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,885.73 : 134,618.49 = 71,039.27 : x
  2. Step 2: Convert to fraction form
    89,885.73/134,618.49 = 71,039.27/x
  3. Step 3: Cross multiply
    89,885.73x = 134,618.49 × 71,039.27
  4. Step 4: Simplify right side
    89,885.73x = 9,563,198,585.01
  5. Step 5: Solve for x
    x = 9,563,198,585.01/89,885.73
  6. Step 6: Final answer
    x = 106,392.85

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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.