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Finding the Fourth Proportional to 73,157.25, 109,735.71 and 28,759.62

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Solution

The fourth proportional to 73,157.25, 109,735.71 and 28,759.62 is: 43,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.25 : 109,735.71 = 28,759.62 : x
  2. Step 2: Convert to fraction form
    73,157.25/109,735.71 = 28,759.62/x
  3. Step 3: Cross multiply
    73,157.25x = 109,735.71 × 28,759.62
  4. Step 4: Simplify right side
    73,157.25x = 3,155,957,320.03
  5. Step 5: Solve for x
    x = 3,155,957,320.03/73,157.25
  6. Step 6: Final answer
    x = 43,139.37

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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.