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Finding the Fourth Proportional to 81,894.72, 122,596.03 and 73,339.90

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Solution

The fourth proportional to 81,894.72, 122,596.03 and 73,339.90 is: 109,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,894.72 : 122,596.03 = 73,339.90 : x
  2. Step 2: Convert to fraction form
    81,894.72/122,596.03 = 73,339.90/x
  3. Step 3: Cross multiply
    81,894.72x = 122,596.03 × 73,339.90
  4. Step 4: Simplify right side
    81,894.72x = 8,991,180,580.60
  5. Step 5: Solve for x
    x = 8,991,180,580.60/81,894.72
  6. Step 6: Final answer
    x = 109,789.50

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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.