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Finding the Fourth Proportional to 84,088.82, 126,101.72 and 27,918.56

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Solution

The fourth proportional to 84,088.82, 126,101.72 and 27,918.56 is: 41,867.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,088.82 : 126,101.72 = 27,918.56 : x
  2. Step 2: Convert to fraction form
    84,088.82/126,101.72 = 27,918.56/x
  3. Step 3: Cross multiply
    84,088.82x = 126,101.72 × 27,918.56
  4. Step 4: Simplify right side
    84,088.82x = 3,520,578,435.92
  5. Step 5: Solve for x
    x = 3,520,578,435.92/84,088.82
  6. Step 6: Final answer
    x = 41,867.38

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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.