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Finding the Fourth Proportional to 73,258.42, 109,813.56 and 28,867.90

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Solution

The fourth proportional to 73,258.42, 109,813.56 and 28,867.90 is: 43,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,258.42 : 109,813.56 = 28,867.90 : x
  2. Step 2: Convert to fraction form
    73,258.42/109,813.56 = 28,867.90/x
  3. Step 3: Cross multiply
    73,258.42x = 109,813.56 × 28,867.90
  4. Step 4: Simplify right side
    73,258.42x = 3,170,086,868.72
  5. Step 5: Solve for x
    x = 3,170,086,868.72/73,258.42
  6. Step 6: Final answer
    x = 43,272.66

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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.