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Finding the Fourth Proportional to 84,042.03, 126,078.03 and 27,885.51

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Solution

The fourth proportional to 84,042.03, 126,078.03 and 27,885.51 is: 41,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,042.03 : 126,078.03 = 27,885.51 : x
  2. Step 2: Convert to fraction form
    84,042.03/126,078.03 = 27,885.51/x
  3. Step 3: Cross multiply
    84,042.03x = 126,078.03 × 27,885.51
  4. Step 4: Simplify right side
    84,042.03x = 3,515,750,166.35
  5. Step 5: Solve for x
    x = 3,515,750,166.35/84,042.03
  6. Step 6: Final answer
    x = 41,833.24

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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.