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Finding the Fourth Proportional to 81,690.66, 122,536.71 and 22,525.02

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Solution

The fourth proportional to 81,690.66, 122,536.71 and 22,525.02 is: 33,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,690.66 : 122,536.71 = 22,525.02 : x
  2. Step 2: Convert to fraction form
    81,690.66/122,536.71 = 22,525.02/x
  3. Step 3: Cross multiply
    81,690.66x = 122,536.71 × 22,525.02
  4. Step 4: Simplify right side
    81,690.66x = 2,760,141,843.48
  5. Step 5: Solve for x
    x = 2,760,141,843.48/81,690.66
  6. Step 6: Final answer
    x = 33,787.73

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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.