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Finding the Fourth Proportional to 39,652.61, 54,720.63 and 21,747.96

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Solution

The fourth proportional to 39,652.61, 54,720.63 and 21,747.96 is: 30,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,652.61 : 54,720.63 = 21,747.96 : x
  2. Step 2: Convert to fraction form
    39,652.61/54,720.63 = 21,747.96/x
  3. Step 3: Cross multiply
    39,652.61x = 54,720.63 × 21,747.96
  4. Step 4: Simplify right side
    39,652.61x = 1,190,062,072.41
  5. Step 5: Solve for x
    x = 1,190,062,072.41/39,652.61
  6. Step 6: Final answer
    x = 30,012.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.