Home / 61.90-85.27-43.45

Finding the Fourth Proportional to 61.90, 85.27 and 43.45

Calculator

Solution

The fourth proportional to 61.90, 85.27 and 43.45 is: 59.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.90 : 85.27 = 43.45 : x
  2. Step 2: Convert to fraction form
    61.90/85.27 = 43.45/x
  3. Step 3: Cross multiply
    61.90x = 85.27 × 43.45
  4. Step 4: Simplify right side
    61.90x = 3,704.98
  5. Step 5: Solve for x
    x = 3,704.98/61.90
  6. Step 6: Final answer
    x = 59.85

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.