Home / 82.10-122.96-43.48

Finding the Fourth Proportional to 82.10, 122.96 and 43.48

Calculator

Solution

The fourth proportional to 82.10, 122.96 and 43.48 is: 65.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.10 : 122.96 = 43.48 : x
  2. Step 2: Convert to fraction form
    82.10/122.96 = 43.48/x
  3. Step 3: Cross multiply
    82.10x = 122.96 × 43.48
  4. Step 4: Simplify right side
    82.10x = 5,346.30
  5. Step 5: Solve for x
    x = 5,346.30/82.10
  6. Step 6: Final answer
    x = 65.12

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.