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Finding the Fourth Proportional to 27,387.69, 41,081.54 and 8,919.69

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Solution

The fourth proportional to 27,387.69, 41,081.54 and 8,919.69 is: 13,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,387.69 : 41,081.54 = 8,919.69 : x
  2. Step 2: Convert to fraction form
    27,387.69/41,081.54 = 8,919.69/x
  3. Step 3: Cross multiply
    27,387.69x = 41,081.54 × 8,919.69
  4. Step 4: Simplify right side
    27,387.69x = 366,434,556.92
  5. Step 5: Solve for x
    x = 366,434,556.92/27,387.69
  6. Step 6: Final answer
    x = 13,379.54

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.