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Finding the Fourth Proportional to 84,558.57, 126,837.77 and 34,638.76

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Solution

The fourth proportional to 84,558.57, 126,837.77 and 34,638.76 is: 51,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558.57 : 126,837.77 = 34,638.76 : x
  2. Step 2: Convert to fraction form
    84,558.57/126,837.77 = 34,638.76/x
  3. Step 3: Cross multiply
    84,558.57x = 126,837.77 × 34,638.76
  4. Step 4: Simplify right side
    84,558.57x = 4,393,503,073.97
  5. Step 5: Solve for x
    x = 4,393,503,073.97/84,558.57
  6. Step 6: Final answer
    x = 51,958.11

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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.