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Finding the Fourth Proportional to 84,608.78, 126,909.85 and 34,676.86

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Solution

The fourth proportional to 84,608.78, 126,909.85 and 34,676.86 is: 52,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,608.78 : 126,909.85 = 34,676.86 : x
  2. Step 2: Convert to fraction form
    84,608.78/126,909.85 = 34,676.86/x
  3. Step 3: Cross multiply
    84,608.78x = 126,909.85 × 34,676.86
  4. Step 4: Simplify right side
    84,608.78x = 4,400,835,101.07
  5. Step 5: Solve for x
    x = 4,400,835,101.07/84,608.78
  6. Step 6: Final answer
    x = 52,013.93

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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.