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Finding the Fourth Proportional to 40,365, 60,557.22 and 12,663

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Solution

The fourth proportional to 40,365, 60,557.22 and 12,663 is: 18,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,365 : 60,557.22 = 12,663 : x
  2. Step 2: Convert to fraction form
    40,365/60,557.22 = 12,663/x
  3. Step 3: Cross multiply
    40,365x = 60,557.22 × 12,663
  4. Step 4: Simplify right side
    40,365x = 766,836,076.86
  5. Step 5: Solve for x
    x = 766,836,076.86/40,365
  6. Step 6: Final answer
    x = 18,997.55

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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.