Home / 82,139.64-123,209.49-28,873.44

Finding the Fourth Proportional to 82,139.64, 123,209.49 and 28,873.44

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Solution

The fourth proportional to 82,139.64, 123,209.49 and 28,873.44 is: 43,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,139.64 : 123,209.49 = 28,873.44 : x
  2. Step 2: Convert to fraction form
    82,139.64/123,209.49 = 28,873.44/x
  3. Step 3: Cross multiply
    82,139.64x = 123,209.49 × 28,873.44
  4. Step 4: Simplify right side
    82,139.64x = 3,557,481,816.95
  5. Step 5: Solve for x
    x = 3,557,481,816.95/82,139.64
  6. Step 6: Final answer
    x = 43,310.17

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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.