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Finding the Fourth Proportional to 79,722, 119,634.84 and 30,474

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Solution

The fourth proportional to 79,722, 119,634.84 and 30,474 is: 45,730.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,722 : 119,634.84 = 30,474 : x
  2. Step 2: Convert to fraction form
    79,722/119,634.84 = 30,474/x
  3. Step 3: Cross multiply
    79,722x = 119,634.84 × 30,474
  4. Step 4: Simplify right side
    79,722x = 3,645,752,114.16
  5. Step 5: Solve for x
    x = 3,645,752,114.16/79,722
  6. Step 6: Final answer
    x = 45,730.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.