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Finding the Fourth Proportional to 68,692.17, 103,053.02 and 21,306.27

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Solution

The fourth proportional to 68,692.17, 103,053.02 and 21,306.27 is: 31,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,692.17 : 103,053.02 = 21,306.27 : x
  2. Step 2: Convert to fraction form
    68,692.17/103,053.02 = 21,306.27/x
  3. Step 3: Cross multiply
    68,692.17x = 103,053.02 × 21,306.27
  4. Step 4: Simplify right side
    68,692.17x = 2,195,675,361.90
  5. Step 5: Solve for x
    x = 2,195,675,361.90/68,692.17
  6. Step 6: Final answer
    x = 31,963.98

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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.