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Finding the Fourth Proportional to 40,601.20, 60,853.20 and 20,869.60

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Solution

The fourth proportional to 40,601.20, 60,853.20 and 20,869.60 is: 31,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,601.20 : 60,853.20 = 20,869.60 : x
  2. Step 2: Convert to fraction form
    40,601.20/60,853.20 = 20,869.60/x
  3. Step 3: Cross multiply
    40,601.20x = 60,853.20 × 20,869.60
  4. Step 4: Simplify right side
    40,601.20x = 1,269,981,942.72
  5. Step 5: Solve for x
    x = 1,269,981,942.72/40,601.20
  6. Step 6: Final answer
    x = 31,279.42

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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.