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Finding the Fourth Proportional to 66,323.64, 99,520.02 and 29,379

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Solution

The fourth proportional to 66,323.64, 99,520.02 and 29,379 is: 44,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,323.64 : 99,520.02 = 29,379 : x
  2. Step 2: Convert to fraction form
    66,323.64/99,520.02 = 29,379/x
  3. Step 3: Cross multiply
    66,323.64x = 99,520.02 × 29,379
  4. Step 4: Simplify right side
    66,323.64x = 2,923,798,667.58
  5. Step 5: Solve for x
    x = 2,923,798,667.58/66,323.64
  6. Step 6: Final answer
    x = 44,083.81

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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.