Home / 72.72-100.34-43.59

Finding the Fourth Proportional to 72.72, 100.34 and 43.59

Calculator

Solution

The fourth proportional to 72.72, 100.34 and 43.59 is: 60.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.72 : 100.34 = 43.59 : x
  2. Step 2: Convert to fraction form
    72.72/100.34 = 43.59/x
  3. Step 3: Cross multiply
    72.72x = 100.34 × 43.59
  4. Step 4: Simplify right side
    72.72x = 4,374.14
  5. Step 5: Solve for x
    x = 4,374.14/72.72
  6. Step 6: Final answer
    x = 60.15

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.