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Finding the Fourth Proportional to 41,600.64, 62,380.80 and 20,812.80

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Solution

The fourth proportional to 41,600.64, 62,380.80 and 20,812.80 is: 31,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,600.64 : 62,380.80 = 20,812.80 : x
  2. Step 2: Convert to fraction form
    41,600.64/62,380.80 = 20,812.80/x
  3. Step 3: Cross multiply
    41,600.64x = 62,380.80 × 20,812.80
  4. Step 4: Simplify right side
    41,600.64x = 1,298,319,114.24
  5. Step 5: Solve for x
    x = 1,298,319,114.24/41,600.64
  6. Step 6: Final answer
    x = 31,209.11

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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.