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Finding the Fourth Proportional to 66,299.97, 99,291.67 and 38,160.88

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Solution

The fourth proportional to 66,299.97, 99,291.67 and 38,160.88 is: 57,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,299.97 : 99,291.67 = 38,160.88 : x
  2. Step 2: Convert to fraction form
    66,299.97/99,291.67 = 38,160.88/x
  3. Step 3: Cross multiply
    66,299.97x = 99,291.67 × 38,160.88
  4. Step 4: Simplify right side
    66,299.97x = 3,789,057,503.87
  5. Step 5: Solve for x
    x = 3,789,057,503.87/66,299.97
  6. Step 6: Final answer
    x = 57,150.21

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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.