Home / 94.12-129.86-55.30

Finding the Fourth Proportional to 94.12, 129.86 and 55.30

Calculator

Solution

The fourth proportional to 94.12, 129.86 and 55.30 is: 76.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.12 : 129.86 = 55.30 : x
  2. Step 2: Convert to fraction form
    94.12/129.86 = 55.30/x
  3. Step 3: Cross multiply
    94.12x = 129.86 × 55.30
  4. Step 4: Simplify right side
    94.12x = 7,181.26
  5. Step 5: Solve for x
    x = 7,181.26/94.12
  6. Step 6: Final answer
    x = 76.30

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.