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Finding the Fourth Proportional to 68,342.68, 94,310.76 and 40,067.20

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Solution

The fourth proportional to 68,342.68, 94,310.76 and 40,067.20 is: 55,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,342.68 : 94,310.76 = 40,067.20 : x
  2. Step 2: Convert to fraction form
    68,342.68/94,310.76 = 40,067.20/x
  3. Step 3: Cross multiply
    68,342.68x = 94,310.76 × 40,067.20
  4. Step 4: Simplify right side
    68,342.68x = 3,778,768,083.07
  5. Step 5: Solve for x
    x = 3,778,768,083.07/68,342.68
  6. Step 6: Final answer
    x = 55,291.48

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1.5x scale

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.