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Finding the Fourth Proportional to 81,723.76, 122,524.79 and 34,352.73

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Solution

The fourth proportional to 81,723.76, 122,524.79 and 34,352.73 is: 51,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.76 : 122,524.79 = 34,352.73 : x
  2. Step 2: Convert to fraction form
    81,723.76/122,524.79 = 34,352.73/x
  3. Step 3: Cross multiply
    81,723.76x = 122,524.79 × 34,352.73
  4. Step 4: Simplify right side
    81,723.76x = 4,209,060,857.41
  5. Step 5: Solve for x
    x = 4,209,060,857.41/81,723.76
  6. Step 6: Final answer
    x = 51,503.52

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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.