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Finding the Fourth Proportional to 68,801.40, 103,435.38 and 54,938.52

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Solution

The fourth proportional to 68,801.40, 103,435.38 and 54,938.52 is: 82,594.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,801.40 : 103,435.38 = 54,938.52 : x
  2. Step 2: Convert to fraction form
    68,801.40/103,435.38 = 54,938.52/x
  3. Step 3: Cross multiply
    68,801.40x = 103,435.38 × 54,938.52
  4. Step 4: Simplify right side
    68,801.40x = 5,682,586,692.84
  5. Step 5: Solve for x
    x = 5,682,586,692.84/68,801.40
  6. Step 6: Final answer
    x = 82,594.06

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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.