Home / 82,313.28-123,469.02-19,983.78

Finding the Fourth Proportional to 82,313.28, 123,469.02 and 19,983.78

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Solution

The fourth proportional to 82,313.28, 123,469.02 and 19,983.78 is: 29,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,313.28 : 123,469.02 = 19,983.78 : x
  2. Step 2: Convert to fraction form
    82,313.28/123,469.02 = 19,983.78/x
  3. Step 3: Cross multiply
    82,313.28x = 123,469.02 × 19,983.78
  4. Step 4: Simplify right side
    82,313.28x = 2,467,377,732.50
  5. Step 5: Solve for x
    x = 2,467,377,732.50/82,313.28
  6. Step 6: Final answer
    x = 29,975.45

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1.5x scale

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.