Home / 84,083.43-126,121.50-20,902.23

Finding the Fourth Proportional to 84,083.43, 126,121.50 and 20,902.23

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Solution

The fourth proportional to 84,083.43, 126,121.50 and 20,902.23 is: 31,352.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,083.43 : 126,121.50 = 20,902.23 : x
  2. Step 2: Convert to fraction form
    84,083.43/126,121.50 = 20,902.23/x
  3. Step 3: Cross multiply
    84,083.43x = 126,121.50 × 20,902.23
  4. Step 4: Simplify right side
    84,083.43x = 2,636,220,600.95
  5. Step 5: Solve for x
    x = 2,636,220,600.95/84,083.43
  6. Step 6: Final answer
    x = 31,352.44

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Double scale
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1.5x scale

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.