Home / 80,736.96-121,105.76-21,572.80

Finding the Fourth Proportional to 80,736.96, 121,105.76 and 21,572.80

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Solution

The fourth proportional to 80,736.96, 121,105.76 and 21,572.80 is: 32,359.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,736.96 : 121,105.76 = 21,572.80 : x
  2. Step 2: Convert to fraction form
    80,736.96/121,105.76 = 21,572.80/x
  3. Step 3: Cross multiply
    80,736.96x = 121,105.76 × 21,572.80
  4. Step 4: Simplify right side
    80,736.96x = 2,612,590,339.33
  5. Step 5: Solve for x
    x = 2,612,590,339.33/80,736.96
  6. Step 6: Final answer
    x = 32,359.29

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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.