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Finding the Fourth Proportional to 80,171.54, 110,670.80 and 49,971.90

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Solution

The fourth proportional to 80,171.54, 110,670.80 and 49,971.90 is: 68,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,171.54 : 110,670.80 = 49,971.90 : x
  2. Step 2: Convert to fraction form
    80,171.54/110,670.80 = 49,971.90/x
  3. Step 3: Cross multiply
    80,171.54x = 110,670.80 × 49,971.90
  4. Step 4: Simplify right side
    80,171.54x = 5,530,429,900.66
  5. Step 5: Solve for x
    x = 5,530,429,900.66/80,171.54
  6. Step 6: Final answer
    x = 68,982.46

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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.