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Finding the Fourth Proportional to 40,418.64, 60,625.80 and 14,122.80

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Solution

The fourth proportional to 40,418.64, 60,625.80 and 14,122.80 is: 21,183.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,418.64 : 60,625.80 = 14,122.80 : x
  2. Step 2: Convert to fraction form
    40,418.64/60,625.80 = 14,122.80/x
  3. Step 3: Cross multiply
    40,418.64x = 60,625.80 × 14,122.80
  4. Step 4: Simplify right side
    40,418.64x = 856,206,048.24
  5. Step 5: Solve for x
    x = 856,206,048.24/40,418.64
  6. Step 6: Final answer
    x = 21,183.45

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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.