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Finding the Fourth Proportional to 72,512.77, 100,086.02 and 49,551.89

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Solution

The fourth proportional to 72,512.77, 100,086.02 and 49,551.89 is: 68,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,512.77 : 100,086.02 = 49,551.89 : x
  2. Step 2: Convert to fraction form
    72,512.77/100,086.02 = 49,551.89/x
  3. Step 3: Cross multiply
    72,512.77x = 100,086.02 × 49,551.89
  4. Step 4: Simplify right side
    72,512.77x = 4,959,451,205.82
  5. Step 5: Solve for x
    x = 4,959,451,205.82/72,512.77
  6. Step 6: Final answer
    x = 68,394.18

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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.