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Finding the Fourth Proportional to 84,503.80, 126,749.10 and 22,172.68

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Solution

The fourth proportional to 84,503.80, 126,749.10 and 22,172.68 is: 33,257.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,503.80 : 126,749.10 = 22,172.68 : x
  2. Step 2: Convert to fraction form
    84,503.80/126,749.10 = 22,172.68/x
  3. Step 3: Cross multiply
    84,503.80x = 126,749.10 × 22,172.68
  4. Step 4: Simplify right side
    84,503.80x = 2,810,367,234.59
  5. Step 5: Solve for x
    x = 2,810,367,234.59/84,503.80
  6. Step 6: Final answer
    x = 33,257.29

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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.