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Finding the Fourth Proportional to 103,808.90, 155,614.92 and 33,639

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Solution

The fourth proportional to 103,808.90, 155,614.92 and 33,639 is: 50,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,808.90 : 155,614.92 = 33,639 : x
  2. Step 2: Convert to fraction form
    103,808.90/155,614.92 = 33,639/x
  3. Step 3: Cross multiply
    103,808.90x = 155,614.92 × 33,639
  4. Step 4: Simplify right side
    103,808.90x = 5,234,730,293.88
  5. Step 5: Solve for x
    x = 5,234,730,293.88/103,808.90
  6. Step 6: Final answer
    x = 50,426.61

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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.