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Finding the Fourth Proportional to 91,856.97, 126,764.58 and 51,571.82

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Solution

The fourth proportional to 91,856.97, 126,764.58 and 51,571.82 is: 71,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.97 : 126,764.58 = 51,571.82 : x
  2. Step 2: Convert to fraction form
    91,856.97/126,764.58 = 51,571.82/x
  3. Step 3: Cross multiply
    91,856.97x = 126,764.58 × 51,571.82
  4. Step 4: Simplify right side
    91,856.97x = 6,537,480,102.14
  5. Step 5: Solve for x
    x = 6,537,480,102.14/91,856.97
  6. Step 6: Final answer
    x = 71,170.21

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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.