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Finding the Fourth Proportional to 81,539.34, 122,250.66 and 34,766.70

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Solution

The fourth proportional to 81,539.34, 122,250.66 and 34,766.70 is: 52,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,539.34 : 122,250.66 = 34,766.70 : x
  2. Step 2: Convert to fraction form
    81,539.34/122,250.66 = 34,766.70/x
  3. Step 3: Cross multiply
    81,539.34x = 122,250.66 × 34,766.70
  4. Step 4: Simplify right side
    81,539.34x = 4,250,252,021.02
  5. Step 5: Solve for x
    x = 4,250,252,021.02/81,539.34
  6. Step 6: Final answer
    x = 52,125.17

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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.