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Finding the Fourth Proportional to 84,166.89, 126,161.58 and 27,991.97

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Solution

The fourth proportional to 84,166.89, 126,161.58 and 27,991.97 is: 41,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,166.89 : 126,161.58 = 27,991.97 : x
  2. Step 2: Convert to fraction form
    84,166.89/126,161.58 = 27,991.97/x
  3. Step 3: Cross multiply
    84,166.89x = 126,161.58 × 27,991.97
  4. Step 4: Simplify right side
    84,166.89x = 3,531,511,162.51
  5. Step 5: Solve for x
    x = 3,531,511,162.51/84,166.89
  6. Step 6: Final answer
    x = 41,958.44

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1.5x scale

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.