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Finding the Fourth Proportional to 91,712.46, 126,509.44 and 57,667

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Solution

The fourth proportional to 91,712.46, 126,509.44 and 57,667 is: 79,546.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,712.46 : 126,509.44 = 57,667 : x
  2. Step 2: Convert to fraction form
    91,712.46/126,509.44 = 57,667/x
  3. Step 3: Cross multiply
    91,712.46x = 126,509.44 × 57,667
  4. Step 4: Simplify right side
    91,712.46x = 7,295,419,876.48
  5. Step 5: Solve for x
    x = 7,295,419,876.48/91,712.46
  6. Step 6: Final answer
    x = 79,546.66

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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.