Home / 78.56-117.92-51.52

Finding the Fourth Proportional to 78.56, 117.92 and 51.52

Calculator

Solution

The fourth proportional to 78.56, 117.92 and 51.52 is: 77.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78.56 : 117.92 = 51.52 : x
  2. Step 2: Convert to fraction form
    78.56/117.92 = 51.52/x
  3. Step 3: Cross multiply
    78.56x = 117.92 × 51.52
  4. Step 4: Simplify right side
    78.56x = 6,075.24
  5. Step 5: Solve for x
    x = 6,075.24/78.56
  6. Step 6: Final answer
    x = 77.33

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.