Home / 80.66-121-32.58

Finding the Fourth Proportional to 80.66, 121 and 32.58

Calculator

Solution

The fourth proportional to 80.66, 121 and 32.58 is: 48.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.66 : 121 = 32.58 : x
  2. Step 2: Convert to fraction form
    80.66/121 = 32.58/x
  3. Step 3: Cross multiply
    80.66x = 121 × 32.58
  4. Step 4: Simplify right side
    80.66x = 3,942.18
  5. Step 5: Solve for x
    x = 3,942.18/80.66
  6. Step 6: Final answer
    x = 48.87

Related Problems

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.