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Finding the Fourth Proportional to 79,697.73, 119,546.38 and 20,528.44

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Solution

The fourth proportional to 79,697.73, 119,546.38 and 20,528.44 is: 30,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,697.73 : 119,546.38 = 20,528.44 : x
  2. Step 2: Convert to fraction form
    79,697.73/119,546.38 = 20,528.44/x
  3. Step 3: Cross multiply
    79,697.73x = 119,546.38 × 20,528.44
  4. Step 4: Simplify right side
    79,697.73x = 2,454,100,689.05
  5. Step 5: Solve for x
    x = 2,454,100,689.05/79,697.73
  6. Step 6: Final answer
    x = 30,792.60

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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.