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Finding the Fourth Proportional to 43,299.89, 64,949.12 and 13,717.68

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Solution

The fourth proportional to 43,299.89, 64,949.12 and 13,717.68 is: 20,576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,299.89 : 64,949.12 = 13,717.68 : x
  2. Step 2: Convert to fraction form
    43,299.89/64,949.12 = 13,717.68/x
  3. Step 3: Cross multiply
    43,299.89x = 64,949.12 × 13,717.68
  4. Step 4: Simplify right side
    43,299.89x = 890,951,244.44
  5. Step 5: Solve for x
    x = 890,951,244.44/43,299.89
  6. Step 6: Final answer
    x = 20,576.29

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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.