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Finding the Fourth Proportional to 108,419.70, 162,634.11 and 38,299.38

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Solution

The fourth proportional to 108,419.70, 162,634.11 and 38,299.38 is: 57,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,419.70 : 162,634.11 = 38,299.38 : x
  2. Step 2: Convert to fraction form
    108,419.70/162,634.11 = 38,299.38/x
  3. Step 3: Cross multiply
    108,419.70x = 162,634.11 × 38,299.38
  4. Step 4: Simplify right side
    108,419.70x = 6,228,785,579.85
  5. Step 5: Solve for x
    x = 6,228,785,579.85/108,419.70
  6. Step 6: Final answer
    x = 57,450.68

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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.