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Finding the Fourth Proportional to 40,351.88, 60,537.54 and 12,649.88

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Solution

The fourth proportional to 40,351.88, 60,537.54 and 12,649.88 is: 18,977.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,351.88 : 60,537.54 = 12,649.88 : x
  2. Step 2: Convert to fraction form
    40,351.88/60,537.54 = 12,649.88/x
  3. Step 3: Cross multiply
    40,351.88x = 60,537.54 × 12,649.88
  4. Step 4: Simplify right side
    40,351.88x = 765,792,313.81
  5. Step 5: Solve for x
    x = 765,792,313.81/40,351.88
  6. Step 6: Final answer
    x = 18,977.86

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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.