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Finding the Fourth Proportional to 81,277.92, 112,114.80 and 51,469.92

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Solution

The fourth proportional to 81,277.92, 112,114.80 and 51,469.92 is: 70,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.92 : 112,114.80 = 51,469.92 : x
  2. Step 2: Convert to fraction form
    81,277.92/112,114.80 = 51,469.92/x
  3. Step 3: Cross multiply
    81,277.92x = 112,114.80 × 51,469.92
  4. Step 4: Simplify right side
    81,277.92x = 5,770,539,786.82
  5. Step 5: Solve for x
    x = 5,770,539,786.82/81,277.92
  6. Step 6: Final answer
    x = 70,997.63

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1.5x scale

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.