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Finding the Fourth Proportional to 53,996.80, 81,000.24 and 20,253.82

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Solution

The fourth proportional to 53,996.80, 81,000.24 and 20,253.82 is: 30,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,996.80 : 81,000.24 = 20,253.82 : x
  2. Step 2: Convert to fraction form
    53,996.80/81,000.24 = 20,253.82/x
  3. Step 3: Cross multiply
    53,996.80x = 81,000.24 × 20,253.82
  4. Step 4: Simplify right side
    53,996.80x = 1,640,564,280.92
  5. Step 5: Solve for x
    x = 1,640,564,280.92/53,996.80
  6. Step 6: Final answer
    x = 30,382.62

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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.