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Finding the Fourth Proportional to 79,306.60, 109,385.73 and 67,351

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Solution

The fourth proportional to 79,306.60, 109,385.73 and 67,351 is: 92,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,306.60 : 109,385.73 = 67,351 : x
  2. Step 2: Convert to fraction form
    79,306.60/109,385.73 = 67,351/x
  3. Step 3: Cross multiply
    79,306.60x = 109,385.73 × 67,351
  4. Step 4: Simplify right side
    79,306.60x = 7,367,238,301.23
  5. Step 5: Solve for x
    x = 7,367,238,301.23/79,306.60
  6. Step 6: Final answer
    x = 92,895.65

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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.