Home / 79,891.62-119,841.94-20,725.72

Finding the Fourth Proportional to 79,891.62, 119,841.94 and 20,725.72

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Solution

The fourth proportional to 79,891.62, 119,841.94 and 20,725.72 is: 31,089.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,891.62 : 119,841.94 = 20,725.72 : x
  2. Step 2: Convert to fraction form
    79,891.62/119,841.94 = 20,725.72/x
  3. Step 3: Cross multiply
    79,891.62x = 119,841.94 × 20,725.72
  4. Step 4: Simplify right side
    79,891.62x = 2,483,810,492.70
  5. Step 5: Solve for x
    x = 2,483,810,492.70/79,891.62
  6. Step 6: Final answer
    x = 31,089.75

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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.