Home / 84,257.38-126,399.03-31,670.56

Finding the Fourth Proportional to 84,257.38, 126,399.03 and 31,670.56

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Solution

The fourth proportional to 84,257.38, 126,399.03 and 31,670.56 is: 47,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,257.38 : 126,399.03 = 31,670.56 : x
  2. Step 2: Convert to fraction form
    84,257.38/126,399.03 = 31,670.56/x
  3. Step 3: Cross multiply
    84,257.38x = 126,399.03 × 31,670.56
  4. Step 4: Simplify right side
    84,257.38x = 4,003,128,063.56
  5. Step 5: Solve for x
    x = 4,003,128,063.56/84,257.38
  6. Step 6: Final answer
    x = 47,510.71

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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.