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Finding the Fourth Proportional to 54,522.98, 81,735.96 and 21,235.28

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Solution

The fourth proportional to 54,522.98, 81,735.96 and 21,235.28 is: 31,834.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,522.98 : 81,735.96 = 21,235.28 : x
  2. Step 2: Convert to fraction form
    54,522.98/81,735.96 = 21,235.28/x
  3. Step 3: Cross multiply
    54,522.98x = 81,735.96 × 21,235.28
  4. Step 4: Simplify right side
    54,522.98x = 1,735,685,996.67
  5. Step 5: Solve for x
    x = 1,735,685,996.67/54,522.98
  6. Step 6: Final answer
    x = 31,834.03

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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.