Home / 80.89-111.60-60.23

Finding the Fourth Proportional to 80.89, 111.60 and 60.23

Calculator

Solution

The fourth proportional to 80.89, 111.60 and 60.23 is: 83.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.89 : 111.60 = 60.23 : x
  2. Step 2: Convert to fraction form
    80.89/111.60 = 60.23/x
  3. Step 3: Cross multiply
    80.89x = 111.60 × 60.23
  4. Step 4: Simplify right side
    80.89x = 6,721.95
  5. Step 5: Solve for x
    x = 6,721.95/80.89
  6. Step 6: Final answer
    x = 83.10

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.