Home / 83.70-125.45-34.95

Finding the Fourth Proportional to 83.70, 125.45 and 34.95

Calculator

Solution

The fourth proportional to 83.70, 125.45 and 34.95 is: 52.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.70 : 125.45 = 34.95 : x
  2. Step 2: Convert to fraction form
    83.70/125.45 = 34.95/x
  3. Step 3: Cross multiply
    83.70x = 125.45 × 34.95
  4. Step 4: Simplify right side
    83.70x = 4,384.48
  5. Step 5: Solve for x
    x = 4,384.48/83.70
  6. Step 6: Final answer
    x = 52.38

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.