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Finding the Fourth Proportional to 68,820.84, 103,234.23 and 18,899.73

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Solution

The fourth proportional to 68,820.84, 103,234.23 and 18,899.73 is: 28,350.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,820.84 : 103,234.23 = 18,899.73 : x
  2. Step 2: Convert to fraction form
    68,820.84/103,234.23 = 18,899.73/x
  3. Step 3: Cross multiply
    68,820.84x = 103,234.23 × 18,899.73
  4. Step 4: Simplify right side
    68,820.84x = 1,951,099,073.76
  5. Step 5: Solve for x
    x = 1,951,099,073.76/68,820.84
  6. Step 6: Final answer
    x = 28,350.41

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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.