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Finding the Fourth Proportional to 67,885, 101,827.68 and 21,137.92

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Solution

The fourth proportional to 67,885, 101,827.68 and 21,137.92 is: 31,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,885 : 101,827.68 = 21,137.92 : x
  2. Step 2: Convert to fraction form
    67,885/101,827.68 = 21,137.92/x
  3. Step 3: Cross multiply
    67,885x = 101,827.68 × 21,137.92
  4. Step 4: Simplify right side
    67,885x = 2,152,425,353.63
  5. Step 5: Solve for x
    x = 2,152,425,353.63/67,885
  6. Step 6: Final answer
    x = 31,706.94

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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.