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Finding the Fourth Proportional to 81,800.80, 122,701.22 and 29,203.44

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Solution

The fourth proportional to 81,800.80, 122,701.22 and 29,203.44 is: 43,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,800.80 : 122,701.22 = 29,203.44 : x
  2. Step 2: Convert to fraction form
    81,800.80/122,701.22 = 29,203.44/x
  3. Step 3: Cross multiply
    81,800.80x = 122,701.22 × 29,203.44
  4. Step 4: Simplify right side
    81,800.80x = 3,583,297,716.20
  5. Step 5: Solve for x
    x = 3,583,297,716.20/81,800.80
  6. Step 6: Final answer
    x = 43,805.17

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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.