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Finding the Fourth Proportional to 41,695.20, 62,542.80 and 20,911.20

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Solution

The fourth proportional to 41,695.20, 62,542.80 and 20,911.20 is: 31,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,695.20 : 62,542.80 = 20,911.20 : x
  2. Step 2: Convert to fraction form
    41,695.20/62,542.80 = 20,911.20/x
  3. Step 3: Cross multiply
    41,695.20x = 62,542.80 × 20,911.20
  4. Step 4: Simplify right side
    41,695.20x = 1,307,844,999.36
  5. Step 5: Solve for x
    x = 1,307,844,999.36/41,695.20
  6. Step 6: Final answer
    x = 31,366.80

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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.