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Finding the Fourth Proportional to 79,995.26, 119,992.89 and 20,830.76

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Solution

The fourth proportional to 79,995.26, 119,992.89 and 20,830.76 is: 31,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,995.26 : 119,992.89 = 20,830.76 : x
  2. Step 2: Convert to fraction form
    79,995.26/119,992.89 = 20,830.76/x
  3. Step 3: Cross multiply
    79,995.26x = 119,992.89 × 20,830.76
  4. Step 4: Simplify right side
    79,995.26x = 2,499,542,493.33
  5. Step 5: Solve for x
    x = 2,499,542,493.33/79,995.26
  6. Step 6: Final answer
    x = 31,246.13

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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.