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Finding the Fourth Proportional to 103,670.69, 155,464.18 and 40,481.78

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Solution

The fourth proportional to 103,670.69, 155,464.18 and 40,481.78 is: 60,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.69 : 155,464.18 = 40,481.78 : x
  2. Step 2: Convert to fraction form
    103,670.69/155,464.18 = 40,481.78/x
  3. Step 3: Cross multiply
    103,670.69x = 155,464.18 × 40,481.78
  4. Step 4: Simplify right side
    103,670.69x = 6,293,466,732.64
  5. Step 5: Solve for x
    x = 6,293,466,732.64/103,670.69
  6. Step 6: Final answer
    x = 60,706.33

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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.