Home / 68.76-102.93-57.87

Finding the Fourth Proportional to 68.76, 102.93 and 57.87

Calculator

Solution

The fourth proportional to 68.76, 102.93 and 57.87 is: 86.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.76 : 102.93 = 57.87 : x
  2. Step 2: Convert to fraction form
    68.76/102.93 = 57.87/x
  3. Step 3: Cross multiply
    68.76x = 102.93 × 57.87
  4. Step 4: Simplify right side
    68.76x = 5,956.56
  5. Step 5: Solve for x
    x = 5,956.56/68.76
  6. Step 6: Final answer
    x = 86.63

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.