Home / 83,979.02-125,986.30-27,815.95

Finding the Fourth Proportional to 83,979.02, 125,986.30 and 27,815.95

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Solution

The fourth proportional to 83,979.02, 125,986.30 and 27,815.95 is: 41,729.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,979.02 : 125,986.30 = 27,815.95 : x
  2. Step 2: Convert to fraction form
    83,979.02/125,986.30 = 27,815.95/x
  3. Step 3: Cross multiply
    83,979.02x = 125,986.30 × 27,815.95
  4. Step 4: Simplify right side
    83,979.02x = 3,504,428,621.49
  5. Step 5: Solve for x
    x = 3,504,428,621.49/83,979.02
  6. Step 6: Final answer
    x = 41,729.81

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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.