Home / 84,265.70-126,399.05-28,105.66

Finding the Fourth Proportional to 84,265.70, 126,399.05 and 28,105.66

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Solution

The fourth proportional to 84,265.70, 126,399.05 and 28,105.66 is: 42,158.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,265.70 : 126,399.05 = 28,105.66 : x
  2. Step 2: Convert to fraction form
    84,265.70/126,399.05 = 28,105.66/x
  3. Step 3: Cross multiply
    84,265.70x = 126,399.05 × 28,105.66
  4. Step 4: Simplify right side
    84,265.70x = 3,552,527,951.10
  5. Step 5: Solve for x
    x = 3,552,527,951.10/84,265.70
  6. Step 6: Final answer
    x = 42,158.65

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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.