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Finding the Fourth Proportional to 68,353, 94,330.79 and 40,067.80

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Solution

The fourth proportional to 68,353, 94,330.79 and 40,067.80 is: 55,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,353 : 94,330.79 = 40,067.80 : x
  2. Step 2: Convert to fraction form
    68,353/94,330.79 = 40,067.80/x
  3. Step 3: Cross multiply
    68,353x = 94,330.79 × 40,067.80
  4. Step 4: Simplify right side
    68,353x = 3,779,627,227.56
  5. Step 5: Solve for x
    x = 3,779,627,227.56/68,353
  6. Step 6: Final answer
    x = 55,295.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.