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Finding the Fourth Proportional to 68,752.50, 103,128.83 and 18,833.03

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Solution

The fourth proportional to 68,752.50, 103,128.83 and 18,833.03 is: 28,249.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,752.50 : 103,128.83 = 18,833.03 : x
  2. Step 2: Convert to fraction form
    68,752.50/103,128.83 = 18,833.03/x
  3. Step 3: Cross multiply
    68,752.50x = 103,128.83 × 18,833.03
  4. Step 4: Simplify right side
    68,752.50x = 1,942,228,056.40
  5. Step 5: Solve for x
    x = 1,942,228,056.40/68,752.50
  6. Step 6: Final answer
    x = 28,249.56

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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.