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Finding the Fourth Proportional to 81,580.41, 122,350.68 and 63,766.98

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Solution

The fourth proportional to 81,580.41, 122,350.68 and 63,766.98 is: 95,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.41 : 122,350.68 = 63,766.98 : x
  2. Step 2: Convert to fraction form
    81,580.41/122,350.68 = 63,766.98/x
  3. Step 3: Cross multiply
    81,580.41x = 122,350.68 × 63,766.98
  4. Step 4: Simplify right side
    81,580.41x = 7,801,933,364.55
  5. Step 5: Solve for x
    x = 7,801,933,364.55/81,580.41
  6. Step 6: Final answer
    x = 95,634.89

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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.