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Finding the Fourth Proportional to 67,997.25, 101,999.52 and 21,253.77

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Solution

The fourth proportional to 67,997.25, 101,999.52 and 21,253.77 is: 31,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,997.25 : 101,999.52 = 21,253.77 : x
  2. Step 2: Convert to fraction form
    67,997.25/101,999.52 = 21,253.77/x
  3. Step 3: Cross multiply
    67,997.25x = 101,999.52 × 21,253.77
  4. Step 4: Simplify right side
    67,997.25x = 2,167,874,338.19
  5. Step 5: Solve for x
    x = 2,167,874,338.19/67,997.25
  6. Step 6: Final answer
    x = 31,881.79

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1.5x scale

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.