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Finding the Fourth Proportional to 40,500, 60,777 and 15,560.64

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Solution

The fourth proportional to 40,500, 60,777 and 15,560.64 is: 23,351.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,500 : 60,777 = 15,560.64 : x
  2. Step 2: Convert to fraction form
    40,500/60,777 = 15,560.64/x
  3. Step 3: Cross multiply
    40,500x = 60,777 × 15,560.64
  4. Step 4: Simplify right side
    40,500x = 945,729,017.28
  5. Step 5: Solve for x
    x = 945,729,017.28/40,500
  6. Step 6: Final answer
    x = 23,351.33

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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.