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Finding the Fourth Proportional to 40,137.54, 60,203.88 and 12,435.54

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Solution

The fourth proportional to 40,137.54, 60,203.88 and 12,435.54 is: 18,652.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,137.54 : 60,203.88 = 12,435.54 : x
  2. Step 2: Convert to fraction form
    40,137.54/60,203.88 = 12,435.54/x
  3. Step 3: Cross multiply
    40,137.54x = 60,203.88 × 12,435.54
  4. Step 4: Simplify right side
    40,137.54x = 748,667,757.90
  5. Step 5: Solve for x
    x = 748,667,757.90/40,137.54
  6. Step 6: Final answer
    x = 18,652.56

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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.