Home / 81,815.31-122,724.48-25,654.16

Finding the Fourth Proportional to 81,815.31, 122,724.48 and 25,654.16

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Solution

The fourth proportional to 81,815.31, 122,724.48 and 25,654.16 is: 38,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,815.31 : 122,724.48 = 25,654.16 : x
  2. Step 2: Convert to fraction form
    81,815.31/122,724.48 = 25,654.16/x
  3. Step 3: Cross multiply
    81,815.31x = 122,724.48 × 25,654.16
  4. Step 4: Simplify right side
    81,815.31x = 3,148,393,848.85
  5. Step 5: Solve for x
    x = 3,148,393,848.85/81,815.31
  6. Step 6: Final answer
    x = 38,481.72

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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.