Home / 80,809.82-121,222.94-21,651.48

Finding the Fourth Proportional to 80,809.82, 121,222.94 and 21,651.48

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Solution

The fourth proportional to 80,809.82, 121,222.94 and 21,651.48 is: 32,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,809.82 : 121,222.94 = 21,651.48 : x
  2. Step 2: Convert to fraction form
    80,809.82/121,222.94 = 21,651.48/x
  3. Step 3: Cross multiply
    80,809.82x = 121,222.94 × 21,651.48
  4. Step 4: Simplify right side
    80,809.82x = 2,624,656,060.95
  5. Step 5: Solve for x
    x = 2,624,656,060.95/80,809.82
  6. Step 6: Final answer
    x = 32,479.42

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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.