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Finding the Fourth Proportional to 80,650.42, 121,000.22 and 41,235.22

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Solution

The fourth proportional to 80,650.42, 121,000.22 and 41,235.22 is: 61,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,650.42 : 121,000.22 = 41,235.22 : x
  2. Step 2: Convert to fraction form
    80,650.42/121,000.22 = 41,235.22/x
  3. Step 3: Cross multiply
    80,650.42x = 121,000.22 × 41,235.22
  4. Step 4: Simplify right side
    80,650.42x = 4,989,470,691.75
  5. Step 5: Solve for x
    x = 4,989,470,691.75/80,650.42
  6. Step 6: Final answer
    x = 61,865.40

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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.