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Finding the Fourth Proportional to 80,604.15, 120,920.81 and 26,571.71

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Solution

The fourth proportional to 80,604.15, 120,920.81 and 26,571.71 is: 39,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,604.15 : 120,920.81 = 26,571.71 : x
  2. Step 2: Convert to fraction form
    80,604.15/120,920.81 = 26,571.71/x
  3. Step 3: Cross multiply
    80,604.15x = 120,920.81 × 26,571.71
  4. Step 4: Simplify right side
    80,604.15x = 3,213,071,958.82
  5. Step 5: Solve for x
    x = 3,213,071,958.82/80,604.15
  6. Step 6: Final answer
    x = 39,862.36

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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.