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Finding the Fourth Proportional to 66,429.91, 99,692.25 and 36,871.39

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Solution

The fourth proportional to 66,429.91, 99,692.25 and 36,871.39 is: 55,333.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429.91 : 99,692.25 = 36,871.39 : x
  2. Step 2: Convert to fraction form
    66,429.91/99,692.25 = 36,871.39/x
  3. Step 3: Cross multiply
    66,429.91x = 99,692.25 × 36,871.39
  4. Step 4: Simplify right side
    66,429.91x = 3,675,791,829.73
  5. Step 5: Solve for x
    x = 3,675,791,829.73/66,429.91
  6. Step 6: Final answer
    x = 55,333.39

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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.