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Finding the Fourth Proportional to 54,528.40, 81,796.02 and 21,237.40

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Solution

The fourth proportional to 54,528.40, 81,796.02 and 21,237.40 is: 31,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,528.40 : 81,796.02 = 21,237.40 : x
  2. Step 2: Convert to fraction form
    54,528.40/81,796.02 = 21,237.40/x
  3. Step 3: Cross multiply
    54,528.40x = 81,796.02 × 21,237.40
  4. Step 4: Simplify right side
    54,528.40x = 1,737,134,795.15
  5. Step 5: Solve for x
    x = 1,737,134,795.15/54,528.40
  6. Step 6: Final answer
    x = 31,857.43

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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.