Home / 71.79-107.52-58.28

Finding the Fourth Proportional to 71.79, 107.52 and 58.28

Calculator

Solution

The fourth proportional to 71.79, 107.52 and 58.28 is: 87.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.79 : 107.52 = 58.28 : x
  2. Step 2: Convert to fraction form
    71.79/107.52 = 58.28/x
  3. Step 3: Cross multiply
    71.79x = 107.52 × 58.28
  4. Step 4: Simplify right side
    71.79x = 6,265.73
  5. Step 5: Solve for x
    x = 6,265.73/71.79
  6. Step 6: Final answer
    x = 87.28

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.