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Finding the Fourth Proportional to 44,391.38, 66,619.94 and 21,017.88

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Solution

The fourth proportional to 44,391.38, 66,619.94 and 21,017.88 is: 31,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,391.38 : 66,619.94 = 21,017.88 : x
  2. Step 2: Convert to fraction form
    44,391.38/66,619.94 = 21,017.88/x
  3. Step 3: Cross multiply
    44,391.38x = 66,619.94 × 21,017.88
  4. Step 4: Simplify right side
    44,391.38x = 1,400,209,799.44
  5. Step 5: Solve for x
    x = 1,400,209,799.44/44,391.38
  6. Step 6: Final answer
    x = 31,542.38

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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.