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Finding the Fourth Proportional to 91,855.92, 126,763.04 and 51,572.64

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Solution

The fourth proportional to 91,855.92, 126,763.04 and 51,572.64 is: 71,171.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,855.92 : 126,763.04 = 51,572.64 : x
  2. Step 2: Convert to fraction form
    91,855.92/126,763.04 = 51,572.64/x
  3. Step 3: Cross multiply
    91,855.92x = 126,763.04 × 51,572.64
  4. Step 4: Simplify right side
    91,855.92x = 6,537,504,627.23
  5. Step 5: Solve for x
    x = 6,537,504,627.23/91,855.92
  6. Step 6: Final answer
    x = 71,171.29

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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.