Home / 79,975.20-119,891.50-40,512

Finding the Fourth Proportional to 79,975.20, 119,891.50 and 40,512

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Solution

The fourth proportional to 79,975.20, 119,891.50 and 40,512 is: 60,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,975.20 : 119,891.50 = 40,512 : x
  2. Step 2: Convert to fraction form
    79,975.20/119,891.50 = 40,512/x
  3. Step 3: Cross multiply
    79,975.20x = 119,891.50 × 40,512
  4. Step 4: Simplify right side
    79,975.20x = 4,857,044,448
  5. Step 5: Solve for x
    x = 4,857,044,448/79,975.20
  6. Step 6: Final answer
    x = 60,731.88

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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.