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Finding the Fourth Proportional to 99,817.60, 149,601.81 and 49,911.97

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Solution

The fourth proportional to 99,817.60, 149,601.81 and 49,911.97 is: 74,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,817.60 : 149,601.81 = 49,911.97 : x
  2. Step 2: Convert to fraction form
    99,817.60/149,601.81 = 49,911.97/x
  3. Step 3: Cross multiply
    99,817.60x = 149,601.81 × 49,911.97
  4. Step 4: Simplify right side
    99,817.60x = 7,466,921,052.67
  5. Step 5: Solve for x
    x = 7,466,921,052.67/99,817.60
  6. Step 6: Final answer
    x = 74,805.66

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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.