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Finding the Fourth Proportional to 66,658.44, 100,012.94 and 40,023.04

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Solution

The fourth proportional to 66,658.44, 100,012.94 and 40,023.04 is: 60,049.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,658.44 : 100,012.94 = 40,023.04 : x
  2. Step 2: Convert to fraction form
    66,658.44/100,012.94 = 40,023.04/x
  3. Step 3: Cross multiply
    66,658.44x = 100,012.94 × 40,023.04
  4. Step 4: Simplify right side
    66,658.44x = 4,002,821,898.14
  5. Step 5: Solve for x
    x = 4,002,821,898.14/66,658.44
  6. Step 6: Final answer
    x = 60,049.74

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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.