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Finding the Fourth Proportional to 27,439.71, 41,162 and 7,718.43

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Solution

The fourth proportional to 27,439.71, 41,162 and 7,718.43 is: 11,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,439.71 : 41,162 = 7,718.43 : x
  2. Step 2: Convert to fraction form
    27,439.71/41,162 = 7,718.43/x
  3. Step 3: Cross multiply
    27,439.71x = 41,162 × 7,718.43
  4. Step 4: Simplify right side
    27,439.71x = 317,706,015.66
  5. Step 5: Solve for x
    x = 317,706,015.66/27,439.71
  6. Step 6: Final answer
    x = 11,578.33

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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.