Home / 82,078.63-123,121.71-25,148.45

Finding the Fourth Proportional to 82,078.63, 123,121.71 and 25,148.45

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Solution

The fourth proportional to 82,078.63, 123,121.71 and 25,148.45 is: 37,723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,078.63 : 123,121.71 = 25,148.45 : x
  2. Step 2: Convert to fraction form
    82,078.63/123,121.71 = 25,148.45/x
  3. Step 3: Cross multiply
    82,078.63x = 123,121.71 × 25,148.45
  4. Step 4: Simplify right side
    82,078.63x = 3,096,320,244.80
  5. Step 5: Solve for x
    x = 3,096,320,244.80/82,078.63
  6. Step 6: Final answer
    x = 37,723.83

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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.