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Finding the Fourth Proportional to 91,863.72, 126,763.62 and 51,579.24

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Solution

The fourth proportional to 91,863.72, 126,763.62 and 51,579.24 is: 71,174.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.72 : 126,763.62 = 51,579.24 : x
  2. Step 2: Convert to fraction form
    91,863.72/126,763.62 = 51,579.24/x
  3. Step 3: Cross multiply
    91,863.72x = 126,763.62 × 51,579.24
  4. Step 4: Simplify right side
    91,863.72x = 6,538,371,179.25
  5. Step 5: Solve for x
    x = 6,538,371,179.25/91,863.72
  6. Step 6: Final answer
    x = 71,174.68

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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.