Home / 82,268.28-123,402.02-19,938.78

Finding the Fourth Proportional to 82,268.28, 123,402.02 and 19,938.78

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Solution

The fourth proportional to 82,268.28, 123,402.02 and 19,938.78 is: 29,908.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,268.28 : 123,402.02 = 19,938.78 : x
  2. Step 2: Convert to fraction form
    82,268.28/123,402.02 = 19,938.78/x
  3. Step 3: Cross multiply
    82,268.28x = 123,402.02 × 19,938.78
  4. Step 4: Simplify right side
    82,268.28x = 2,460,485,628.64
  5. Step 5: Solve for x
    x = 2,460,485,628.64/82,268.28
  6. Step 6: Final answer
    x = 29,908.07

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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.