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Finding the Fourth Proportional to 89,830.38, 134,672.49 and 33,639

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Solution

The fourth proportional to 89,830.38, 134,672.49 and 33,639 is: 50,431.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,830.38 : 134,672.49 = 33,639 : x
  2. Step 2: Convert to fraction form
    89,830.38/134,672.49 = 33,639/x
  3. Step 3: Cross multiply
    89,830.38x = 134,672.49 × 33,639
  4. Step 4: Simplify right side
    89,830.38x = 4,530,247,891.11
  5. Step 5: Solve for x
    x = 4,530,247,891.11/89,830.38
  6. Step 6: Final answer
    x = 50,431.13

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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.