Home / 61.12-91.63-47.62

Finding the Fourth Proportional to 61.12, 91.63 and 47.62

Calculator

Solution

The fourth proportional to 61.12, 91.63 and 47.62 is: 71.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.12 : 91.63 = 47.62 : x
  2. Step 2: Convert to fraction form
    61.12/91.63 = 47.62/x
  3. Step 3: Cross multiply
    61.12x = 91.63 × 47.62
  4. Step 4: Simplify right side
    61.12x = 4,363.42
  5. Step 5: Solve for x
    x = 4,363.42/61.12
  6. Step 6: Final answer
    x = 71.39

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.