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Finding the Fourth Proportional to 30,361.45, 45,537.03 and 8,169.88

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Solution

The fourth proportional to 30,361.45, 45,537.03 and 8,169.88 is: 12,253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.45 : 45,537.03 = 8,169.88 : x
  2. Step 2: Convert to fraction form
    30,361.45/45,537.03 = 8,169.88/x
  3. Step 3: Cross multiply
    30,361.45x = 45,537.03 × 8,169.88
  4. Step 4: Simplify right side
    30,361.45x = 372,032,029.81
  5. Step 5: Solve for x
    x = 372,032,029.81/30,361.45
  6. Step 6: Final answer
    x = 12,253.43

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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.