Home / 82.78-114.26-56.54

Finding the Fourth Proportional to 82.78, 114.26 and 56.54

Calculator

Solution

The fourth proportional to 82.78, 114.26 and 56.54 is: 78.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.78 : 114.26 = 56.54 : x
  2. Step 2: Convert to fraction form
    82.78/114.26 = 56.54/x
  3. Step 3: Cross multiply
    82.78x = 114.26 × 56.54
  4. Step 4: Simplify right side
    82.78x = 6,460.26
  5. Step 5: Solve for x
    x = 6,460.26/82.78
  6. Step 6: Final answer
    x = 78.04

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.