Home / 62.78-93.86-54.30

Finding the Fourth Proportional to 62.78, 93.86 and 54.30

Calculator

Solution

The fourth proportional to 62.78, 93.86 and 54.30 is: 81.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.78 : 93.86 = 54.30 : x
  2. Step 2: Convert to fraction form
    62.78/93.86 = 54.30/x
  3. Step 3: Cross multiply
    62.78x = 93.86 × 54.30
  4. Step 4: Simplify right side
    62.78x = 5,096.88
  5. Step 5: Solve for x
    x = 5,096.88/62.78
  6. Step 6: Final answer
    x = 81.19

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.