Home / 71.58-98.73-63.42

Finding the Fourth Proportional to 71.58, 98.73 and 63.42

Calculator

Solution

The fourth proportional to 71.58, 98.73 and 63.42 is: 87.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.58 : 98.73 = 63.42 : x
  2. Step 2: Convert to fraction form
    71.58/98.73 = 63.42/x
  3. Step 3: Cross multiply
    71.58x = 98.73 × 63.42
  4. Step 4: Simplify right side
    71.58x = 6,261.46
  5. Step 5: Solve for x
    x = 6,261.46/71.58
  6. Step 6: Final answer
    x = 87.47

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.