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Finding the Fourth Proportional to 115,412, 173,118 and 27,860

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Solution

The fourth proportional to 115,412, 173,118 and 27,860 is: 41,790

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,412 : 173,118 = 27,860 : x
  2. Step 2: Convert to fraction form
    115,412/173,118 = 27,860/x
  3. Step 3: Cross multiply
    115,412x = 173,118 × 27,860
  4. Step 4: Simplify right side
    115,412x = 4,823,067,480
  5. Step 5: Solve for x
    x = 4,823,067,480/115,412
  6. Step 6: Final answer
    x = 41,790

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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.