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Finding the Fourth Proportional to 44,402.90, 66,571.56 and 21,002

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Solution

The fourth proportional to 44,402.90, 66,571.56 and 21,002 is: 31,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,402.90 : 66,571.56 = 21,002 : x
  2. Step 2: Convert to fraction form
    44,402.90/66,571.56 = 21,002/x
  3. Step 3: Cross multiply
    44,402.90x = 66,571.56 × 21,002
  4. Step 4: Simplify right side
    44,402.90x = 1,398,135,903.12
  5. Step 5: Solve for x
    x = 1,398,135,903.12/44,402.90
  6. Step 6: Final answer
    x = 31,487.49

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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.