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Finding the Fourth Proportional to 81,644.58, 122,448.24 and 22,485.42

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Solution

The fourth proportional to 81,644.58, 122,448.24 and 22,485.42 is: 33,723.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,644.58 : 122,448.24 = 22,485.42 : x
  2. Step 2: Convert to fraction form
    81,644.58/122,448.24 = 22,485.42/x
  3. Step 3: Cross multiply
    81,644.58x = 122,448.24 × 22,485.42
  4. Step 4: Simplify right side
    81,644.58x = 2,753,300,104.66
  5. Step 5: Solve for x
    x = 2,753,300,104.66/81,644.58
  6. Step 6: Final answer
    x = 33,723.00

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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.