Home / 53.89-80.75-52.43

Finding the Fourth Proportional to 53.89, 80.75 and 52.43

Calculator

Solution

The fourth proportional to 53.89, 80.75 and 52.43 is: 78.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.89 : 80.75 = 52.43 : x
  2. Step 2: Convert to fraction form
    53.89/80.75 = 52.43/x
  3. Step 3: Cross multiply
    53.89x = 80.75 × 52.43
  4. Step 4: Simplify right side
    53.89x = 4,233.45
  5. Step 5: Solve for x
    x = 4,233.45/53.89
  6. Step 6: Final answer
    x = 78.56

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.