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Finding the Fourth Proportional to 68,729.76, 94,843.80 and 38,514.96

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Solution

The fourth proportional to 68,729.76, 94,843.80 and 38,514.96 is: 53,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,729.76 : 94,843.80 = 38,514.96 : x
  2. Step 2: Convert to fraction form
    68,729.76/94,843.80 = 38,514.96/x
  3. Step 3: Cross multiply
    68,729.76x = 94,843.80 × 38,514.96
  4. Step 4: Simplify right side
    68,729.76x = 3,652,905,163.25
  5. Step 5: Solve for x
    x = 3,652,905,163.25/68,729.76
  6. Step 6: Final answer
    x = 53,148.81

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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.