Home / 84,204.36-126,296.82-21,879.72

Finding the Fourth Proportional to 84,204.36, 126,296.82 and 21,879.72

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Solution

The fourth proportional to 84,204.36, 126,296.82 and 21,879.72 is: 32,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,204.36 : 126,296.82 = 21,879.72 : x
  2. Step 2: Convert to fraction form
    84,204.36/126,296.82 = 21,879.72/x
  3. Step 3: Cross multiply
    84,204.36x = 126,296.82 × 21,879.72
  4. Step 4: Simplify right side
    84,204.36x = 2,763,339,058.49
  5. Step 5: Solve for x
    x = 2,763,339,058.49/84,204.36
  6. Step 6: Final answer
    x = 32,817.05

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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.