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Finding the Fourth Proportional to 68,753, 103,129.58 and 18,833.53

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Solution

The fourth proportional to 68,753, 103,129.58 and 18,833.53 is: 28,250.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753 : 103,129.58 = 18,833.53 : x
  2. Step 2: Convert to fraction form
    68,753/103,129.58 = 18,833.53/x
  3. Step 3: Cross multiply
    68,753x = 103,129.58 × 18,833.53
  4. Step 4: Simplify right side
    68,753x = 1,942,293,523.17
  5. Step 5: Solve for x
    x = 1,942,293,523.17/68,753
  6. Step 6: Final answer
    x = 28,250.31

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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.