Home / 84,329.20-126,493.80-21,999.70

Finding the Fourth Proportional to 84,329.20, 126,493.80 and 21,999.70

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Solution

The fourth proportional to 84,329.20, 126,493.80 and 21,999.70 is: 32,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,329.20 : 126,493.80 = 21,999.70 : x
  2. Step 2: Convert to fraction form
    84,329.20/126,493.80 = 21,999.70/x
  3. Step 3: Cross multiply
    84,329.20x = 126,493.80 × 21,999.70
  4. Step 4: Simplify right side
    84,329.20x = 2,782,825,651.86
  5. Step 5: Solve for x
    x = 2,782,825,651.86/84,329.20
  6. Step 6: Final answer
    x = 32,999.55

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Similar ratio
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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.