Home / 58.72-80.99-40.31

Finding the Fourth Proportional to 58.72, 80.99 and 40.31

Calculator

Solution

The fourth proportional to 58.72, 80.99 and 40.31 is: 55.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.72 : 80.99 = 40.31 : x
  2. Step 2: Convert to fraction form
    58.72/80.99 = 40.31/x
  3. Step 3: Cross multiply
    58.72x = 80.99 × 40.31
  4. Step 4: Simplify right side
    58.72x = 3,264.71
  5. Step 5: Solve for x
    x = 3,264.71/58.72
  6. Step 6: Final answer
    x = 55.60

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.