Home / 80,934.20-121,401.30-52,940.60

Finding the Fourth Proportional to 80,934.20, 121,401.30 and 52,940.60

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Solution

The fourth proportional to 80,934.20, 121,401.30 and 52,940.60 is: 79,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.20 : 121,401.30 = 52,940.60 : x
  2. Step 2: Convert to fraction form
    80,934.20/121,401.30 = 52,940.60/x
  3. Step 3: Cross multiply
    80,934.20x = 121,401.30 × 52,940.60
  4. Step 4: Simplify right side
    80,934.20x = 6,427,057,662.78
  5. Step 5: Solve for x
    x = 6,427,057,662.78/80,934.20
  6. Step 6: Final answer
    x = 79,410.90

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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.