Home / 87.62-131.72-70.69

Finding the Fourth Proportional to 87.62, 131.72 and 70.69

Calculator

Solution

The fourth proportional to 87.62, 131.72 and 70.69 is: 106.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.62 : 131.72 = 70.69 : x
  2. Step 2: Convert to fraction form
    87.62/131.72 = 70.69/x
  3. Step 3: Cross multiply
    87.62x = 131.72 × 70.69
  4. Step 4: Simplify right side
    87.62x = 9,311.29
  5. Step 5: Solve for x
    x = 9,311.29/87.62
  6. Step 6: Final answer
    x = 106.27

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.