Home / 79.12-118.69-27.74

Finding the Fourth Proportional to 79.12, 118.69 and 27.74

Calculator

Solution

The fourth proportional to 79.12, 118.69 and 27.74 is: 41.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.12 : 118.69 = 27.74 : x
  2. Step 2: Convert to fraction form
    79.12/118.69 = 27.74/x
  3. Step 3: Cross multiply
    79.12x = 118.69 × 27.74
  4. Step 4: Simplify right side
    79.12x = 3,292.88
  5. Step 5: Solve for x
    x = 3,292.88/79.12
  6. Step 6: Final answer
    x = 41.62

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.