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Finding the Fourth Proportional to 89,294.70, 133,942.05 and 69,588

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Solution

The fourth proportional to 89,294.70, 133,942.05 and 69,588 is: 104,382

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,294.70 : 133,942.05 = 69,588 : x
  2. Step 2: Convert to fraction form
    89,294.70/133,942.05 = 69,588/x
  3. Step 3: Cross multiply
    89,294.70x = 133,942.05 × 69,588
  4. Step 4: Simplify right side
    89,294.70x = 9,320,759,375.40
  5. Step 5: Solve for x
    x = 9,320,759,375.40/89,294.70
  6. Step 6: Final answer
    x = 104,382

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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.