Home / 85,208.20-127,812.30-53,715.40

Finding the Fourth Proportional to 85,208.20, 127,812.30 and 53,715.40

Calculator

Solution

The fourth proportional to 85,208.20, 127,812.30 and 53,715.40 is: 80,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,208.20 : 127,812.30 = 53,715.40 : x
  2. Step 2: Convert to fraction form
    85,208.20/127,812.30 = 53,715.40/x
  3. Step 3: Cross multiply
    85,208.20x = 127,812.30 × 53,715.40
  4. Step 4: Simplify right side
    85,208.20x = 6,865,488,819.42
  5. Step 5: Solve for x
    x = 6,865,488,819.42/85,208.20
  6. Step 6: Final answer
    x = 80,573.10

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.