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Finding the Fourth Proportional to 67,753.38, 101,629.15 and 21,006.26

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Solution

The fourth proportional to 67,753.38, 101,629.15 and 21,006.26 is: 31,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,753.38 : 101,629.15 = 21,006.26 : x
  2. Step 2: Convert to fraction form
    67,753.38/101,629.15 = 21,006.26/x
  3. Step 3: Cross multiply
    67,753.38x = 101,629.15 × 21,006.26
  4. Step 4: Simplify right side
    67,753.38x = 2,134,848,348.48
  5. Step 5: Solve for x
    x = 2,134,848,348.48/67,753.38
  6. Step 6: Final answer
    x = 31,509.10

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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.