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Finding the Fourth Proportional to 72,463.88, 108,524.01 and 57,422.64

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Solution

The fourth proportional to 72,463.88, 108,524.01 and 57,422.64 is: 85,997.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.88 : 108,524.01 = 57,422.64 : x
  2. Step 2: Convert to fraction form
    72,463.88/108,524.01 = 57,422.64/x
  3. Step 3: Cross multiply
    72,463.88x = 108,524.01 × 57,422.64
  4. Step 4: Simplify right side
    72,463.88x = 6,231,735,157.59
  5. Step 5: Solve for x
    x = 6,231,735,157.59/72,463.88
  6. Step 6: Final answer
    x = 85,997.81

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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.