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Finding the Fourth Proportional to 54,435, 81,652.56 and 21,603

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Solution

The fourth proportional to 54,435, 81,652.56 and 21,603 is: 32,404.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435 : 81,652.56 = 21,603 : x
  2. Step 2: Convert to fraction form
    54,435/81,652.56 = 21,603/x
  3. Step 3: Cross multiply
    54,435x = 81,652.56 × 21,603
  4. Step 4: Simplify right side
    54,435x = 1,763,940,253.68
  5. Step 5: Solve for x
    x = 1,763,940,253.68/54,435
  6. Step 6: Final answer
    x = 32,404.52

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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.