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Finding the Fourth Proportional to 79,878.26, 119,817.39 and 27,288.20

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Solution

The fourth proportional to 79,878.26, 119,817.39 and 27,288.20 is: 40,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878.26 : 119,817.39 = 27,288.20 : x
  2. Step 2: Convert to fraction form
    79,878.26/119,817.39 = 27,288.20/x
  3. Step 3: Cross multiply
    79,878.26x = 119,817.39 × 27,288.20
  4. Step 4: Simplify right side
    79,878.26x = 3,269,600,302.71
  5. Step 5: Solve for x
    x = 3,269,600,302.71/79,878.26
  6. Step 6: Final answer
    x = 40,932.30

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Double scale
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Similar ratio
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1.5x scale

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.