Home / 51.18-76.78-24.12

Finding the Fourth Proportional to 51.18, 76.78 and 24.12

Calculator

Solution

The fourth proportional to 51.18, 76.78 and 24.12 is: 36.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.18 : 76.78 = 24.12 : x
  2. Step 2: Convert to fraction form
    51.18/76.78 = 24.12/x
  3. Step 3: Cross multiply
    51.18x = 76.78 × 24.12
  4. Step 4: Simplify right side
    51.18x = 1,851.93
  5. Step 5: Solve for x
    x = 1,851.93/51.18
  6. Step 6: Final answer
    x = 36.18

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.