Home / 81,060.35-121,538.21-33,708.11

Finding the Fourth Proportional to 81,060.35, 121,538.21 and 33,708.11

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Solution

The fourth proportional to 81,060.35, 121,538.21 and 33,708.11 is: 50,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,060.35 : 121,538.21 = 33,708.11 : x
  2. Step 2: Convert to fraction form
    81,060.35/121,538.21 = 33,708.11/x
  3. Step 3: Cross multiply
    81,060.35x = 121,538.21 × 33,708.11
  4. Step 4: Simplify right side
    81,060.35x = 4,096,822,575.65
  5. Step 5: Solve for x
    x = 4,096,822,575.65/81,060.35
  6. Step 6: Final answer
    x = 50,540.40

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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.