Home / 80,777.03-121,163.82-21,612.70

Finding the Fourth Proportional to 80,777.03, 121,163.82 and 21,612.70

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Solution

The fourth proportional to 80,777.03, 121,163.82 and 21,612.70 is: 32,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,777.03 : 121,163.82 = 21,612.70 : x
  2. Step 2: Convert to fraction form
    80,777.03/121,163.82 = 21,612.70/x
  3. Step 3: Cross multiply
    80,777.03x = 121,163.82 × 21,612.70
  4. Step 4: Simplify right side
    80,777.03x = 2,618,677,292.51
  5. Step 5: Solve for x
    x = 2,618,677,292.51/80,777.03
  6. Step 6: Final answer
    x = 32,418.59

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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.