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Finding the Fourth Proportional to 81,468.30, 122,202.45 and 75,563.40

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Solution

The fourth proportional to 81,468.30, 122,202.45 and 75,563.40 is: 113,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468.30 : 122,202.45 = 75,563.40 : x
  2. Step 2: Convert to fraction form
    81,468.30/122,202.45 = 75,563.40/x
  3. Step 3: Cross multiply
    81,468.30x = 122,202.45 × 75,563.40
  4. Step 4: Simplify right side
    81,468.30x = 9,234,032,610.33
  5. Step 5: Solve for x
    x = 9,234,032,610.33/81,468.30
  6. Step 6: Final answer
    x = 113,345.10

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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.