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Finding the Fourth Proportional to 79,997.26, 119,995.90 and 20,832.76

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Solution

The fourth proportional to 79,997.26, 119,995.90 and 20,832.76 is: 31,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,997.26 : 119,995.90 = 20,832.76 : x
  2. Step 2: Convert to fraction form
    79,997.26/119,995.90 = 20,832.76/x
  3. Step 3: Cross multiply
    79,997.26x = 119,995.90 × 20,832.76
  4. Step 4: Simplify right side
    79,997.26x = 2,499,845,785.68
  5. Step 5: Solve for x
    x = 2,499,845,785.68/79,997.26
  6. Step 6: Final answer
    x = 31,249.14

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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.