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Finding the Fourth Proportional to 72,804.27, 100,500.89 and 48,944.78

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Solution

The fourth proportional to 72,804.27, 100,500.89 and 48,944.78 is: 67,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.27 : 100,500.89 = 48,944.78 : x
  2. Step 2: Convert to fraction form
    72,804.27/100,500.89 = 48,944.78/x
  3. Step 3: Cross multiply
    72,804.27x = 100,500.89 × 48,944.78
  4. Step 4: Simplify right side
    72,804.27x = 4,918,994,121.27
  5. Step 5: Solve for x
    x = 4,918,994,121.27/72,804.27
  6. Step 6: Final answer
    x = 67,564.64

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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.