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Finding the Fourth Proportional to 81,379.91, 122,081.40 and 25,224.44

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Solution

The fourth proportional to 81,379.91, 122,081.40 and 25,224.44 is: 37,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,379.91 : 122,081.40 = 25,224.44 : x
  2. Step 2: Convert to fraction form
    81,379.91/122,081.40 = 25,224.44/x
  3. Step 3: Cross multiply
    81,379.91x = 122,081.40 × 25,224.44
  4. Step 4: Simplify right side
    81,379.91x = 3,079,434,339.01
  5. Step 5: Solve for x
    x = 3,079,434,339.01/81,379.91
  6. Step 6: Final answer
    x = 37,840.23

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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.