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Finding the Fourth Proportional to 103,496.31, 155,245.03 and 31,449.92

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Solution

The fourth proportional to 103,496.31, 155,245.03 and 31,449.92 is: 47,175.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,496.31 : 155,245.03 = 31,449.92 : x
  2. Step 2: Convert to fraction form
    103,496.31/155,245.03 = 31,449.92/x
  3. Step 3: Cross multiply
    103,496.31x = 155,245.03 × 31,449.92
  4. Step 4: Simplify right side
    103,496.31x = 4,882,442,919.05
  5. Step 5: Solve for x
    x = 4,882,442,919.05/103,496.31
  6. Step 6: Final answer
    x = 47,175.04

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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.