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Finding the Fourth Proportional to 102,755.20, 154,220.28 and 40,469.44

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Solution

The fourth proportional to 102,755.20, 154,220.28 and 40,469.44 is: 60,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,755.20 : 154,220.28 = 40,469.44 : x
  2. Step 2: Convert to fraction form
    102,755.20/154,220.28 = 40,469.44/x
  3. Step 3: Cross multiply
    102,755.20x = 154,220.28 × 40,469.44
  4. Step 4: Simplify right side
    102,755.20x = 6,241,207,982.69
  5. Step 5: Solve for x
    x = 6,241,207,982.69/102,755.20
  6. Step 6: Final answer
    x = 60,738.61

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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.