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Finding the Fourth Proportional to 99,795.31, 149,757.20 and 39,813.54

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Solution

The fourth proportional to 99,795.31, 149,757.20 and 39,813.54 is: 59,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,795.31 : 149,757.20 = 39,813.54 : x
  2. Step 2: Convert to fraction form
    99,795.31/149,757.20 = 39,813.54/x
  3. Step 3: Cross multiply
    99,795.31x = 149,757.20 × 39,813.54
  4. Step 4: Simplify right side
    99,795.31x = 5,962,364,372.02
  5. Step 5: Solve for x
    x = 5,962,364,372.02/99,795.31
  6. Step 6: Final answer
    x = 59,745.94

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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.