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Finding the Fourth Proportional to 40,757.43, 61,144.96 and 12,676.96

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Solution

The fourth proportional to 40,757.43, 61,144.96 and 12,676.96 is: 19,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,757.43 : 61,144.96 = 12,676.96 : x
  2. Step 2: Convert to fraction form
    40,757.43/61,144.96 = 12,676.96/x
  3. Step 3: Cross multiply
    40,757.43x = 61,144.96 × 12,676.96
  4. Step 4: Simplify right side
    40,757.43x = 775,132,212.12
  5. Step 5: Solve for x
    x = 775,132,212.12/40,757.43
  6. Step 6: Final answer
    x = 19,018.18

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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.