Home / 82.47-123.68-48.45

Finding the Fourth Proportional to 82.47, 123.68 and 48.45

Calculator

Solution

The fourth proportional to 82.47, 123.68 and 48.45 is: 72.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.47 : 123.68 = 48.45 : x
  2. Step 2: Convert to fraction form
    82.47/123.68 = 48.45/x
  3. Step 3: Cross multiply
    82.47x = 123.68 × 48.45
  4. Step 4: Simplify right side
    82.47x = 5,992.05
  5. Step 5: Solve for x
    x = 5,992.05/82.47
  6. Step 6: Final answer
    x = 72.66

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.