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Finding the Fourth Proportional to 68,645.52, 94,785.93 and 55,173.60

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Solution

The fourth proportional to 68,645.52, 94,785.93 and 55,173.60 is: 76,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,645.52 : 94,785.93 = 55,173.60 : x
  2. Step 2: Convert to fraction form
    68,645.52/94,785.93 = 55,173.60/x
  3. Step 3: Cross multiply
    68,645.52x = 94,785.93 × 55,173.60
  4. Step 4: Simplify right side
    68,645.52x = 5,229,680,987.45
  5. Step 5: Solve for x
    x = 5,229,680,987.45/68,645.52
  6. Step 6: Final answer
    x = 76,183.86

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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.