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Finding the Fourth Proportional to 103,701.69, 155,517.95 and 40,505.43

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Solution

The fourth proportional to 103,701.69, 155,517.95 and 40,505.43 is: 60,744.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,701.69 : 155,517.95 = 40,505.43 : x
  2. Step 2: Convert to fraction form
    103,701.69/155,517.95 = 40,505.43/x
  3. Step 3: Cross multiply
    103,701.69x = 155,517.95 × 40,505.43
  4. Step 4: Simplify right side
    103,701.69x = 6,299,321,234.94
  5. Step 5: Solve for x
    x = 6,299,321,234.94/103,701.69
  6. Step 6: Final answer
    x = 60,744.63

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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.