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Finding the Fourth Proportional to 79,841.38, 119,729.12 and 27,255.10

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Solution

The fourth proportional to 79,841.38, 119,729.12 and 27,255.10 is: 40,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,841.38 : 119,729.12 = 27,255.10 : x
  2. Step 2: Convert to fraction form
    79,841.38/119,729.12 = 27,255.10/x
  3. Step 3: Cross multiply
    79,841.38x = 119,729.12 × 27,255.10
  4. Step 4: Simplify right side
    79,841.38x = 3,263,229,138.51
  5. Step 5: Solve for x
    x = 3,263,229,138.51/79,841.38
  6. Step 6: Final answer
    x = 40,871.40

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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.