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Finding the Fourth Proportional to 75,616.75, 113,425.14 and 20,212.75

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Solution

The fourth proportional to 75,616.75, 113,425.14 and 20,212.75 is: 30,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,616.75 : 113,425.14 = 20,212.75 : x
  2. Step 2: Convert to fraction form
    75,616.75/113,425.14 = 20,212.75/x
  3. Step 3: Cross multiply
    75,616.75x = 113,425.14 × 20,212.75
  4. Step 4: Simplify right side
    75,616.75x = 2,292,633,998.54
  5. Step 5: Solve for x
    x = 2,292,633,998.54/75,616.75
  6. Step 6: Final answer
    x = 30,319.13

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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.