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Finding the Fourth Proportional to 40,519.98, 60,668.01 and 20,755.98

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Solution

The fourth proportional to 40,519.98, 60,668.01 and 20,755.98 is: 31,076.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,519.98 : 60,668.01 = 20,755.98 : x
  2. Step 2: Convert to fraction form
    40,519.98/60,668.01 = 20,755.98/x
  3. Step 3: Cross multiply
    40,519.98x = 60,668.01 × 20,755.98
  4. Step 4: Simplify right side
    40,519.98x = 1,259,224,002.20
  5. Step 5: Solve for x
    x = 1,259,224,002.20/40,519.98
  6. Step 6: Final answer
    x = 31,076.62

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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.