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Finding the Fourth Proportional to 81,791.84, 122,688.84 and 29,204.48

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Solution

The fourth proportional to 81,791.84, 122,688.84 and 29,204.48 is: 43,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791.84 : 122,688.84 = 29,204.48 : x
  2. Step 2: Convert to fraction form
    81,791.84/122,688.84 = 29,204.48/x
  3. Step 3: Cross multiply
    81,791.84x = 122,688.84 × 29,204.48
  4. Step 4: Simplify right side
    81,791.84x = 3,583,063,774.00
  5. Step 5: Solve for x
    x = 3,583,063,774.00/81,791.84
  6. Step 6: Final answer
    x = 43,807.11

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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.