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Finding the Fourth Proportional to 68,610.30, 102,915.45 and 33,531.90

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Solution

The fourth proportional to 68,610.30, 102,915.45 and 33,531.90 is: 50,297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,610.30 : 102,915.45 = 33,531.90 : x
  2. Step 2: Convert to fraction form
    68,610.30/102,915.45 = 33,531.90/x
  3. Step 3: Cross multiply
    68,610.30x = 102,915.45 × 33,531.90
  4. Step 4: Simplify right side
    68,610.30x = 3,450,950,577.86
  5. Step 5: Solve for x
    x = 3,450,950,577.86/68,610.30
  6. Step 6: Final answer
    x = 50,297.85

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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.