Home / 85.97-118.64-47.16

Finding the Fourth Proportional to 85.97, 118.64 and 47.16

Calculator

Solution

The fourth proportional to 85.97, 118.64 and 47.16 is: 65.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85.97 : 118.64 = 47.16 : x
  2. Step 2: Convert to fraction form
    85.97/118.64 = 47.16/x
  3. Step 3: Cross multiply
    85.97x = 118.64 × 47.16
  4. Step 4: Simplify right side
    85.97x = 5,594.83
  5. Step 5: Solve for x
    x = 5,594.83/85.97
  6. Step 6: Final answer
    x = 65.08

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.