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Finding the Fourth Proportional to 40,309.80, 60,443.10 and 16,909.80

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Solution

The fourth proportional to 40,309.80, 60,443.10 and 16,909.80 is: 25,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,309.80 : 60,443.10 = 16,909.80 : x
  2. Step 2: Convert to fraction form
    40,309.80/60,443.10 = 16,909.80/x
  3. Step 3: Cross multiply
    40,309.80x = 60,443.10 × 16,909.80
  4. Step 4: Simplify right side
    40,309.80x = 1,022,080,732.38
  5. Step 5: Solve for x
    x = 1,022,080,732.38/40,309.80
  6. Step 6: Final answer
    x = 25,355.64

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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.