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Finding the Fourth Proportional to 81,910.58, 122,843.72 and 35,152.52

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Solution

The fourth proportional to 81,910.58, 122,843.72 and 35,152.52 is: 52,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,910.58 : 122,843.72 = 35,152.52 : x
  2. Step 2: Convert to fraction form
    81,910.58/122,843.72 = 35,152.52/x
  3. Step 3: Cross multiply
    81,910.58x = 122,843.72 × 35,152.52
  4. Step 4: Simplify right side
    81,910.58x = 4,318,266,324.17
  5. Step 5: Solve for x
    x = 4,318,266,324.17/81,910.58
  6. Step 6: Final answer
    x = 52,719.27

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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.