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Finding the Fourth Proportional to 75,446.20, 113,169.30 and 19,286.20

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Solution

The fourth proportional to 75,446.20, 113,169.30 and 19,286.20 is: 28,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,446.20 : 113,169.30 = 19,286.20 : x
  2. Step 2: Convert to fraction form
    75,446.20/113,169.30 = 19,286.20/x
  3. Step 3: Cross multiply
    75,446.20x = 113,169.30 × 19,286.20
  4. Step 4: Simplify right side
    75,446.20x = 2,182,605,753.66
  5. Step 5: Solve for x
    x = 2,182,605,753.66/75,446.20
  6. Step 6: Final answer
    x = 28,929.30

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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.