Home / 81,788.62-122,682.97-25,633.10

Finding the Fourth Proportional to 81,788.62, 122,682.97 and 25,633.10

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Solution

The fourth proportional to 81,788.62, 122,682.97 and 25,633.10 is: 38,449.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.62 : 122,682.97 = 25,633.10 : x
  2. Step 2: Convert to fraction form
    81,788.62/122,682.97 = 25,633.10/x
  3. Step 3: Cross multiply
    81,788.62x = 122,682.97 × 25,633.10
  4. Step 4: Simplify right side
    81,788.62x = 3,144,745,104.31
  5. Step 5: Solve for x
    x = 3,144,745,104.31/81,788.62
  6. Step 6: Final answer
    x = 38,449.67

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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.