Home / 71,140.20-106,715.70-21,216.40

Finding the Fourth Proportional to 71,140.20, 106,715.70 and 21,216.40

Calculator

Solution

The fourth proportional to 71,140.20, 106,715.70 and 21,216.40 is: 31,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,140.20 : 106,715.70 = 21,216.40 : x
  2. Step 2: Convert to fraction form
    71,140.20/106,715.70 = 21,216.40/x
  3. Step 3: Cross multiply
    71,140.20x = 106,715.70 × 21,216.40
  4. Step 4: Simplify right side
    71,140.20x = 2,264,122,977.48
  5. Step 5: Solve for x
    x = 2,264,122,977.48/71,140.20
  6. Step 6: Final answer
    x = 31,826.21

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.