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Finding the Fourth Proportional to 40,404.66, 60,540.16 and 20,656.05

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Solution

The fourth proportional to 40,404.66, 60,540.16 and 20,656.05 is: 30,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,404.66 : 60,540.16 = 20,656.05 : x
  2. Step 2: Convert to fraction form
    40,404.66/60,540.16 = 20,656.05/x
  3. Step 3: Cross multiply
    40,404.66x = 60,540.16 × 20,656.05
  4. Step 4: Simplify right side
    40,404.66x = 1,250,520,165.99
  5. Step 5: Solve for x
    x = 1,250,520,165.99/40,404.66
  6. Step 6: Final answer
    x = 30,949.90

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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.