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Finding the Fourth Proportional to 41,805.60, 62,728.90 and 19,620.78

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Solution

The fourth proportional to 41,805.60, 62,728.90 and 19,620.78 is: 29,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,805.60 : 62,728.90 = 19,620.78 : x
  2. Step 2: Convert to fraction form
    41,805.60/62,728.90 = 19,620.78/x
  3. Step 3: Cross multiply
    41,805.60x = 62,728.90 × 19,620.78
  4. Step 4: Simplify right side
    41,805.60x = 1,230,789,946.54
  5. Step 5: Solve for x
    x = 1,230,789,946.54/41,805.60
  6. Step 6: Final answer
    x = 29,440.79

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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.