Home / 84,709.89-126,982.21-40,324.72

Finding the Fourth Proportional to 84,709.89, 126,982.21 and 40,324.72

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Solution

The fourth proportional to 84,709.89, 126,982.21 and 40,324.72 is: 60,447.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,709.89 : 126,982.21 = 40,324.72 : x
  2. Step 2: Convert to fraction form
    84,709.89/126,982.21 = 40,324.72/x
  3. Step 3: Cross multiply
    84,709.89x = 126,982.21 × 40,324.72
  4. Step 4: Simplify right side
    84,709.89x = 5,120,522,063.23
  5. Step 5: Solve for x
    x = 5,120,522,063.23/84,709.89
  6. Step 6: Final answer
    x = 60,447.75

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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.