Home / 53.62-80.42-45.07

Finding the Fourth Proportional to 53.62, 80.42 and 45.07

Calculator

Solution

The fourth proportional to 53.62, 80.42 and 45.07 is: 67.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.62 : 80.42 = 45.07 : x
  2. Step 2: Convert to fraction form
    53.62/80.42 = 45.07/x
  3. Step 3: Cross multiply
    53.62x = 80.42 × 45.07
  4. Step 4: Simplify right side
    53.62x = 3,624.53
  5. Step 5: Solve for x
    x = 3,624.53/53.62
  6. Step 6: Final answer
    x = 67.60

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.