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Finding the Fourth Proportional to 54,640.55, 81,912.22 and 21,353.06

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Solution

The fourth proportional to 54,640.55, 81,912.22 and 21,353.06 is: 32,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,640.55 : 81,912.22 = 21,353.06 : x
  2. Step 2: Convert to fraction form
    54,640.55/81,912.22 = 21,353.06/x
  3. Step 3: Cross multiply
    54,640.55x = 81,912.22 × 21,353.06
  4. Step 4: Simplify right side
    54,640.55x = 1,749,076,548.39
  5. Step 5: Solve for x
    x = 1,749,076,548.39/54,640.55
  6. Step 6: Final answer
    x = 32,010.60

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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.