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Finding the Fourth Proportional to 81,998.34, 122,877.84 and 36,350.98

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Solution

The fourth proportional to 81,998.34, 122,877.84 and 36,350.98 is: 54,473.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,998.34 : 122,877.84 = 36,350.98 : x
  2. Step 2: Convert to fraction form
    81,998.34/122,877.84 = 36,350.98/x
  3. Step 3: Cross multiply
    81,998.34x = 122,877.84 × 36,350.98
  4. Step 4: Simplify right side
    81,998.34x = 4,466,729,904.28
  5. Step 5: Solve for x
    x = 4,466,729,904.28/81,998.34
  6. Step 6: Final answer
    x = 54,473.42

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1.5x scale

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.