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Finding the Fourth Proportional to 53,866.50, 80,815.12 and 18,335.62

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Solution

The fourth proportional to 53,866.50, 80,815.12 and 18,335.62 is: 27,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,866.50 : 80,815.12 = 18,335.62 : x
  2. Step 2: Convert to fraction form
    53,866.50/80,815.12 = 18,335.62/x
  3. Step 3: Cross multiply
    53,866.50x = 80,815.12 × 18,335.62
  4. Step 4: Simplify right side
    53,866.50x = 1,481,795,330.57
  5. Step 5: Solve for x
    x = 1,481,795,330.57/53,866.50
  6. Step 6: Final answer
    x = 27,508.66

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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.