Home / 56.12-77.48-35.40

Finding the Fourth Proportional to 56.12, 77.48 and 35.40

Calculator

Solution

The fourth proportional to 56.12, 77.48 and 35.40 is: 48.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.12 : 77.48 = 35.40 : x
  2. Step 2: Convert to fraction form
    56.12/77.48 = 35.40/x
  3. Step 3: Cross multiply
    56.12x = 77.48 × 35.40
  4. Step 4: Simplify right side
    56.12x = 2,742.79
  5. Step 5: Solve for x
    x = 2,742.79/56.12
  6. Step 6: Final answer
    x = 48.87

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.