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Finding the Fourth Proportional to 81,872.37, 122,808.54 and 22,708.05

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Solution

The fourth proportional to 81,872.37, 122,808.54 and 22,708.05 is: 34,062.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,872.37 : 122,808.54 = 22,708.05 : x
  2. Step 2: Convert to fraction form
    81,872.37/122,808.54 = 22,708.05/x
  3. Step 3: Cross multiply
    81,872.37x = 122,808.54 × 22,708.05
  4. Step 4: Simplify right side
    81,872.37x = 2,788,741,852.70
  5. Step 5: Solve for x
    x = 2,788,741,852.70/81,872.37
  6. Step 6: Final answer
    x = 34,062.06

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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.