Home / 83.40-125.10-59.40

Finding the Fourth Proportional to 83.40, 125.10 and 59.40

Calculator

Solution

The fourth proportional to 83.40, 125.10 and 59.40 is: 89.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.40 : 125.10 = 59.40 : x
  2. Step 2: Convert to fraction form
    83.40/125.10 = 59.40/x
  3. Step 3: Cross multiply
    83.40x = 125.10 × 59.40
  4. Step 4: Simplify right side
    83.40x = 7,430.94
  5. Step 5: Solve for x
    x = 7,430.94/83.40
  6. Step 6: Final answer
    x = 89.10

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.