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Finding the Fourth Proportional to 82,331.68, 123,497.52 and 20,002

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Solution

The fourth proportional to 82,331.68, 123,497.52 and 20,002 is: 30,003.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,331.68 : 123,497.52 = 20,002 : x
  2. Step 2: Convert to fraction form
    82,331.68/123,497.52 = 20,002/x
  3. Step 3: Cross multiply
    82,331.68x = 123,497.52 × 20,002
  4. Step 4: Simplify right side
    82,331.68x = 2,470,197,395.04
  5. Step 5: Solve for x
    x = 2,470,197,395.04/82,331.68
  6. Step 6: Final answer
    x = 30,003.00

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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.