Home / 75,621.20-113,423.14-20,221.52

Finding the Fourth Proportional to 75,621.20, 113,423.14 and 20,221.52

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Solution

The fourth proportional to 75,621.20, 113,423.14 and 20,221.52 is: 30,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.20 : 113,423.14 = 20,221.52 : x
  2. Step 2: Convert to fraction form
    75,621.20/113,423.14 = 20,221.52/x
  3. Step 3: Cross multiply
    75,621.20x = 113,423.14 × 20,221.52
  4. Step 4: Simplify right side
    75,621.20x = 2,293,588,293.97
  5. Step 5: Solve for x
    x = 2,293,588,293.97/75,621.20
  6. Step 6: Final answer
    x = 30,329.96

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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.