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Finding the Fourth Proportional to 45,344, 68,019.92 and 12,512

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Solution

The fourth proportional to 45,344, 68,019.92 and 12,512 is: 18,769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,344 : 68,019.92 = 12,512 : x
  2. Step 2: Convert to fraction form
    45,344/68,019.92 = 12,512/x
  3. Step 3: Cross multiply
    45,344x = 68,019.92 × 12,512
  4. Step 4: Simplify right side
    45,344x = 851,065,239.04
  5. Step 5: Solve for x
    x = 851,065,239.04/45,344
  6. Step 6: Final answer
    x = 18,769.08

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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.