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Finding the Fourth Proportional to 67,191.40, 100,743.90 and 27,764.20

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Solution

The fourth proportional to 67,191.40, 100,743.90 and 27,764.20 is: 41,628.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,191.40 : 100,743.90 = 27,764.20 : x
  2. Step 2: Convert to fraction form
    67,191.40/100,743.90 = 27,764.20/x
  3. Step 3: Cross multiply
    67,191.40x = 100,743.90 × 27,764.20
  4. Step 4: Simplify right side
    67,191.40x = 2,797,073,788.38
  5. Step 5: Solve for x
    x = 2,797,073,788.38/67,191.40
  6. Step 6: Final answer
    x = 41,628.45

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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.