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Finding the Fourth Proportional to 84,577.92, 126,944.64 and 79,497.60

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Solution

The fourth proportional to 84,577.92, 126,944.64 and 79,497.60 is: 119,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,577.92 : 126,944.64 = 79,497.60 : x
  2. Step 2: Convert to fraction form
    84,577.92/126,944.64 = 79,497.60/x
  3. Step 3: Cross multiply
    84,577.92x = 126,944.64 × 79,497.60
  4. Step 4: Simplify right side
    84,577.92x = 10,091,794,212.86
  5. Step 5: Solve for x
    x = 10,091,794,212.86/84,577.92
  6. Step 6: Final answer
    x = 119,319.49

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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.