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Finding the Fourth Proportional to 103,704.69, 155,522.45 and 40,508.43

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Solution

The fourth proportional to 103,704.69, 155,522.45 and 40,508.43 is: 60,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,704.69 : 155,522.45 = 40,508.43 : x
  2. Step 2: Convert to fraction form
    103,704.69/155,522.45 = 40,508.43/x
  3. Step 3: Cross multiply
    103,704.69x = 155,522.45 × 40,508.43
  4. Step 4: Simplify right side
    103,704.69x = 6,299,970,076.71
  5. Step 5: Solve for x
    x = 6,299,970,076.71/103,704.69
  6. Step 6: Final answer
    x = 60,749.13

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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.