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Finding the Fourth Proportional to 68,542.37, 102,813.55 and 38,558.60

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Solution

The fourth proportional to 68,542.37, 102,813.55 and 38,558.60 is: 57,837.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,542.37 : 102,813.55 = 38,558.60 : x
  2. Step 2: Convert to fraction form
    68,542.37/102,813.55 = 38,558.60/x
  3. Step 3: Cross multiply
    68,542.37x = 102,813.55 × 38,558.60
  4. Step 4: Simplify right side
    68,542.37x = 3,964,346,549.03
  5. Step 5: Solve for x
    x = 3,964,346,549.03/68,542.37
  6. Step 6: Final answer
    x = 57,837.90

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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.