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Finding the Fourth Proportional to 103,708.70, 155,528.44 and 40,512.44

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Solution

The fourth proportional to 103,708.70, 155,528.44 and 40,512.44 is: 60,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,708.70 : 155,528.44 = 40,512.44 : x
  2. Step 2: Convert to fraction form
    103,708.70/155,528.44 = 40,512.44/x
  3. Step 3: Cross multiply
    103,708.70x = 155,528.44 × 40,512.44
  4. Step 4: Simplify right side
    103,708.70x = 6,300,836,593.79
  5. Step 5: Solve for x
    x = 6,300,836,593.79/103,708.70
  6. Step 6: Final answer
    x = 60,755.14

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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.