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Finding the Fourth Proportional to 41,101.20, 61,651.80 and 21,418.20

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Solution

The fourth proportional to 41,101.20, 61,651.80 and 21,418.20 is: 32,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,101.20 : 61,651.80 = 21,418.20 : x
  2. Step 2: Convert to fraction form
    41,101.20/61,651.80 = 21,418.20/x
  3. Step 3: Cross multiply
    41,101.20x = 61,651.80 × 21,418.20
  4. Step 4: Simplify right side
    41,101.20x = 1,320,470,582.76
  5. Step 5: Solve for x
    x = 1,320,470,582.76/41,101.20
  6. Step 6: Final answer
    x = 32,127.30

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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.