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Finding the Fourth Proportional to 68,842.55, 103,243.95 and 18,924.27

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Solution

The fourth proportional to 68,842.55, 103,243.95 and 18,924.27 is: 28,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,842.55 : 103,243.95 = 18,924.27 : x
  2. Step 2: Convert to fraction form
    68,842.55/103,243.95 = 18,924.27/x
  3. Step 3: Cross multiply
    68,842.55x = 103,243.95 × 18,924.27
  4. Step 4: Simplify right side
    68,842.55x = 1,953,816,385.67
  5. Step 5: Solve for x
    x = 1,953,816,385.67/68,842.55
  6. Step 6: Final answer
    x = 28,380.94

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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.