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Finding the Fourth Proportional to 89,139.60, 133,660.80 and 29,944.80

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Solution

The fourth proportional to 89,139.60, 133,660.80 and 29,944.80 is: 44,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,139.60 : 133,660.80 = 29,944.80 : x
  2. Step 2: Convert to fraction form
    89,139.60/133,660.80 = 29,944.80/x
  3. Step 3: Cross multiply
    89,139.60x = 133,660.80 × 29,944.80
  4. Step 4: Simplify right side
    89,139.60x = 4,002,445,923.84
  5. Step 5: Solve for x
    x = 4,002,445,923.84/89,139.60
  6. Step 6: Final answer
    x = 44,900.87

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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.