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Finding the Fourth Proportional to 79,205.76, 109,306.68 and 43,398.84

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Solution

The fourth proportional to 79,205.76, 109,306.68 and 43,398.84 is: 59,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.76 : 109,306.68 = 43,398.84 : x
  2. Step 2: Convert to fraction form
    79,205.76/109,306.68 = 43,398.84/x
  3. Step 3: Cross multiply
    79,205.76x = 109,306.68 × 43,398.84
  4. Step 4: Simplify right side
    79,205.76x = 4,743,783,116.25
  5. Step 5: Solve for x
    x = 4,743,783,116.25/79,205.76
  6. Step 6: Final answer
    x = 59,891.90

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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.