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Finding the Fourth Proportional to 61,162.54, 91,727.21 and 16,778.79

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Solution

The fourth proportional to 61,162.54, 91,727.21 and 16,778.79 is: 25,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,162.54 : 91,727.21 = 16,778.79 : x
  2. Step 2: Convert to fraction form
    61,162.54/91,727.21 = 16,778.79/x
  3. Step 3: Cross multiply
    61,162.54x = 91,727.21 × 16,778.79
  4. Step 4: Simplify right side
    61,162.54x = 1,539,071,853.96
  5. Step 5: Solve for x
    x = 1,539,071,853.96/61,162.54
  6. Step 6: Final answer
    x = 25,163.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.