Home / 84,505.50-126,760.05-31,939.74

Finding the Fourth Proportional to 84,505.50, 126,760.05 and 31,939.74

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Solution

The fourth proportional to 84,505.50, 126,760.05 and 31,939.74 is: 47,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,505.50 : 126,760.05 = 31,939.74 : x
  2. Step 2: Convert to fraction form
    84,505.50/126,760.05 = 31,939.74/x
  3. Step 3: Cross multiply
    84,505.50x = 126,760.05 × 31,939.74
  4. Step 4: Simplify right side
    84,505.50x = 4,048,683,039.39
  5. Step 5: Solve for x
    x = 4,048,683,039.39/84,505.50
  6. Step 6: Final answer
    x = 47,910.29

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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.