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Finding the Fourth Proportional to 72,755.46, 109,023.78 and 41,131.44

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Solution

The fourth proportional to 72,755.46, 109,023.78 and 41,131.44 is: 61,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,755.46 : 109,023.78 = 41,131.44 : x
  2. Step 2: Convert to fraction form
    72,755.46/109,023.78 = 41,131.44/x
  3. Step 3: Cross multiply
    72,755.46x = 109,023.78 × 41,131.44
  4. Step 4: Simplify right side
    72,755.46x = 4,484,305,065.64
  5. Step 5: Solve for x
    x = 4,484,305,065.64/72,755.46
  6. Step 6: Final answer
    x = 61,635.31

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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.