Home / 79.21-109.44-62.98

Finding the Fourth Proportional to 79.21, 109.44 and 62.98

Calculator

Solution

The fourth proportional to 79.21, 109.44 and 62.98 is: 87.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.21 : 109.44 = 62.98 : x
  2. Step 2: Convert to fraction form
    79.21/109.44 = 62.98/x
  3. Step 3: Cross multiply
    79.21x = 109.44 × 62.98
  4. Step 4: Simplify right side
    79.21x = 6,891.98
  5. Step 5: Solve for x
    x = 6,891.98/79.21
  6. Step 6: Final answer
    x = 87.01

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.