Home / 80,960.20-121,440.30-25,556.20

Finding the Fourth Proportional to 80,960.20, 121,440.30 and 25,556.20

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Solution

The fourth proportional to 80,960.20, 121,440.30 and 25,556.20 is: 38,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.20 : 121,440.30 = 25,556.20 : x
  2. Step 2: Convert to fraction form
    80,960.20/121,440.30 = 25,556.20/x
  3. Step 3: Cross multiply
    80,960.20x = 121,440.30 × 25,556.20
  4. Step 4: Simplify right side
    80,960.20x = 3,103,552,594.86
  5. Step 5: Solve for x
    x = 3,103,552,594.86/80,960.20
  6. Step 6: Final answer
    x = 38,334.30

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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.