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Finding the Fourth Proportional to 103,549.68, 155,318.92 and 33,429

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Solution

The fourth proportional to 103,549.68, 155,318.92 and 33,429 is: 50,141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,549.68 : 155,318.92 = 33,429 : x
  2. Step 2: Convert to fraction form
    103,549.68/155,318.92 = 33,429/x
  3. Step 3: Cross multiply
    103,549.68x = 155,318.92 × 33,429
  4. Step 4: Simplify right side
    103,549.68x = 5,192,156,176.68
  5. Step 5: Solve for x
    x = 5,192,156,176.68/103,549.68
  6. Step 6: Final answer
    x = 50,141.69

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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.