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Finding the Fourth Proportional to 68,800.24, 103,200.48 and 18,881.02

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Solution

The fourth proportional to 68,800.24, 103,200.48 and 18,881.02 is: 28,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,800.24 : 103,200.48 = 18,881.02 : x
  2. Step 2: Convert to fraction form
    68,800.24/103,200.48 = 18,881.02/x
  3. Step 3: Cross multiply
    68,800.24x = 103,200.48 × 18,881.02
  4. Step 4: Simplify right side
    68,800.24x = 1,948,530,326.89
  5. Step 5: Solve for x
    x = 1,948,530,326.89/68,800.24
  6. Step 6: Final answer
    x = 28,321.56

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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.