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Finding the Fourth Proportional to 72,797.56, 100,452.90 and 40,965.94

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Solution

The fourth proportional to 72,797.56, 100,452.90 and 40,965.94 is: 56,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.56 : 100,452.90 = 40,965.94 : x
  2. Step 2: Convert to fraction form
    72,797.56/100,452.90 = 40,965.94/x
  3. Step 3: Cross multiply
    72,797.56x = 100,452.90 × 40,965.94
  4. Step 4: Simplify right side
    72,797.56x = 4,115,147,474.23
  5. Step 5: Solve for x
    x = 4,115,147,474.23/72,797.56
  6. Step 6: Final answer
    x = 56,528.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.