Home / 51.50-77.14-31.19

Finding the Fourth Proportional to 51.50, 77.14 and 31.19

Calculator

Solution

The fourth proportional to 51.50, 77.14 and 31.19 is: 46.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.50 : 77.14 = 31.19 : x
  2. Step 2: Convert to fraction form
    51.50/77.14 = 31.19/x
  3. Step 3: Cross multiply
    51.50x = 77.14 × 31.19
  4. Step 4: Simplify right side
    51.50x = 2,405.45
  5. Step 5: Solve for x
    x = 2,405.45/51.50
  6. Step 6: Final answer
    x = 46.71

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.