Home / 86,942.20-130,340.40-45,389.20

Finding the Fourth Proportional to 86,942.20, 130,340.40 and 45,389.20

Calculator

Solution

The fourth proportional to 86,942.20, 130,340.40 and 45,389.20 is: 68,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,942.20 : 130,340.40 = 45,389.20 : x
  2. Step 2: Convert to fraction form
    86,942.20/130,340.40 = 45,389.20/x
  3. Step 3: Cross multiply
    86,942.20x = 130,340.40 × 45,389.20
  4. Step 4: Simplify right side
    86,942.20x = 5,916,046,483.68
  5. Step 5: Solve for x
    x = 5,916,046,483.68/86,942.20
  6. Step 6: Final answer
    x = 68,045.74

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.