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Finding the Fourth Proportional to 73,878.43, 110,820.90 and 27,105.79

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Solution

The fourth proportional to 73,878.43, 110,820.90 and 27,105.79 is: 40,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,878.43 : 110,820.90 = 27,105.79 : x
  2. Step 2: Convert to fraction form
    73,878.43/110,820.90 = 27,105.79/x
  3. Step 3: Cross multiply
    73,878.43x = 110,820.90 × 27,105.79
  4. Step 4: Simplify right side
    73,878.43x = 3,003,888,043.01
  5. Step 5: Solve for x
    x = 3,003,888,043.01/73,878.43
  6. Step 6: Final answer
    x = 40,659.88

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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.