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Finding the Fourth Proportional to 40,028, 60,042.82 and 12,326

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Solution

The fourth proportional to 40,028, 60,042.82 and 12,326 is: 18,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,028 : 60,042.82 = 12,326 : x
  2. Step 2: Convert to fraction form
    40,028/60,042.82 = 12,326/x
  3. Step 3: Cross multiply
    40,028x = 60,042.82 × 12,326
  4. Step 4: Simplify right side
    40,028x = 740,087,799.32
  5. Step 5: Solve for x
    x = 740,087,799.32/40,028
  6. Step 6: Final answer
    x = 18,489.25

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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.