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Finding the Fourth Proportional to 72,951.03, 109,382.73 and 28,524.86

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Solution

The fourth proportional to 72,951.03, 109,382.73 and 28,524.86 is: 42,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.03 : 109,382.73 = 28,524.86 : x
  2. Step 2: Convert to fraction form
    72,951.03/109,382.73 = 28,524.86/x
  3. Step 3: Cross multiply
    72,951.03x = 109,382.73 × 28,524.86
  4. Step 4: Simplify right side
    72,951.03x = 3,120,126,512.75
  5. Step 5: Solve for x
    x = 3,120,126,512.75/72,951.03
  6. Step 6: Final answer
    x = 42,770.15

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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.