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Finding the Fourth Proportional to 54,544.80, 81,756.45 and 21,253.80

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Solution

The fourth proportional to 54,544.80, 81,756.45 and 21,253.80 is: 31,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,544.80 : 81,756.45 = 21,253.80 : x
  2. Step 2: Convert to fraction form
    54,544.80/81,756.45 = 21,253.80/x
  3. Step 3: Cross multiply
    54,544.80x = 81,756.45 × 21,253.80
  4. Step 4: Simplify right side
    54,544.80x = 1,737,635,237.01
  5. Step 5: Solve for x
    x = 1,737,635,237.01/54,544.80
  6. Step 6: Final answer
    x = 31,857.03

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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.