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Finding the Fourth Proportional to 79,311.62, 109,450.89 and 43,013.14

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Solution

The fourth proportional to 79,311.62, 109,450.89 and 43,013.14 is: 59,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.62 : 109,450.89 = 43,013.14 : x
  2. Step 2: Convert to fraction form
    79,311.62/109,450.89 = 43,013.14/x
  3. Step 3: Cross multiply
    79,311.62x = 109,450.89 × 43,013.14
  4. Step 4: Simplify right side
    79,311.62x = 4,707,826,454.69
  5. Step 5: Solve for x
    x = 4,707,826,454.69/79,311.62
  6. Step 6: Final answer
    x = 59,358.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.