Home / 82,268.20-123,402.31-19,938.70

Finding the Fourth Proportional to 82,268.20, 123,402.31 and 19,938.70

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Solution

The fourth proportional to 82,268.20, 123,402.31 and 19,938.70 is: 29,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,268.20 : 123,402.31 = 19,938.70 : x
  2. Step 2: Convert to fraction form
    82,268.20/123,402.31 = 19,938.70/x
  3. Step 3: Cross multiply
    82,268.20x = 123,402.31 × 19,938.70
  4. Step 4: Simplify right side
    82,268.20x = 2,460,481,936.80
  5. Step 5: Solve for x
    x = 2,460,481,936.80/82,268.20
  6. Step 6: Final answer
    x = 29,908.05

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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.