Home / 69.95-104.91-42.86

Finding the Fourth Proportional to 69.95, 104.91 and 42.86

Calculator

Solution

The fourth proportional to 69.95, 104.91 and 42.86 is: 64.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.95 : 104.91 = 42.86 : x
  2. Step 2: Convert to fraction form
    69.95/104.91 = 42.86/x
  3. Step 3: Cross multiply
    69.95x = 104.91 × 42.86
  4. Step 4: Simplify right side
    69.95x = 4,496.44
  5. Step 5: Solve for x
    x = 4,496.44/69.95
  6. Step 6: Final answer
    x = 64.28

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.