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Finding the Fourth Proportional to 71,692.37, 107,552.90 and 40,147.28

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Solution

The fourth proportional to 71,692.37, 107,552.90 and 40,147.28 is: 60,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,692.37 : 107,552.90 = 40,147.28 : x
  2. Step 2: Convert to fraction form
    71,692.37/107,552.90 = 40,147.28/x
  3. Step 3: Cross multiply
    71,692.37x = 107,552.90 × 40,147.28
  4. Step 4: Simplify right side
    71,692.37x = 4,317,956,754.32
  5. Step 5: Solve for x
    x = 4,317,956,754.32/71,692.37
  6. Step 6: Final answer
    x = 60,228.96

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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.