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Finding the Fourth Proportional to 81,625.52, 122,393.63 and 25,450.61

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Solution

The fourth proportional to 81,625.52, 122,393.63 and 25,450.61 is: 38,161.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,625.52 : 122,393.63 = 25,450.61 : x
  2. Step 2: Convert to fraction form
    81,625.52/122,393.63 = 25,450.61/x
  3. Step 3: Cross multiply
    81,625.52x = 122,393.63 × 25,450.61
  4. Step 4: Simplify right side
    81,625.52x = 3,114,991,995.27
  5. Step 5: Solve for x
    x = 3,114,991,995.27/81,625.52
  6. Step 6: Final answer
    x = 38,161.99

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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.