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Finding the Fourth Proportional to 80,295.36, 120,517.74 and 40,881.96

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Solution

The fourth proportional to 80,295.36, 120,517.74 and 40,881.96 is: 61,360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,295.36 : 120,517.74 = 40,881.96 : x
  2. Step 2: Convert to fraction form
    80,295.36/120,517.74 = 40,881.96/x
  3. Step 3: Cross multiply
    80,295.36x = 120,517.74 × 40,881.96
  4. Step 4: Simplify right side
    80,295.36x = 4,927,001,425.97
  5. Step 5: Solve for x
    x = 4,927,001,425.97/80,295.36
  6. Step 6: Final answer
    x = 61,360.97

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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.