Home / 82.58-113.83-66.17

Finding the Fourth Proportional to 82.58, 113.83 and 66.17

Calculator

Solution

The fourth proportional to 82.58, 113.83 and 66.17 is: 91.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.58 : 113.83 = 66.17 : x
  2. Step 2: Convert to fraction form
    82.58/113.83 = 66.17/x
  3. Step 3: Cross multiply
    82.58x = 113.83 × 66.17
  4. Step 4: Simplify right side
    82.58x = 7,532.25
  5. Step 5: Solve for x
    x = 7,532.25/82.58
  6. Step 6: Final answer
    x = 91.22

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.