Home / 80,865.45-121,274.79-27,556.23

Finding the Fourth Proportional to 80,865.45, 121,274.79 and 27,556.23

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Solution

The fourth proportional to 80,865.45, 121,274.79 and 27,556.23 is: 41,326.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.45 : 121,274.79 = 27,556.23 : x
  2. Step 2: Convert to fraction form
    80,865.45/121,274.79 = 27,556.23/x
  3. Step 3: Cross multiply
    80,865.45x = 121,274.79 × 27,556.23
  4. Step 4: Simplify right side
    80,865.45x = 3,341,876,006.44
  5. Step 5: Solve for x
    x = 3,341,876,006.44/80,865.45
  6. Step 6: Final answer
    x = 41,326.38

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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.