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Finding the Fourth Proportional to 53,177.91, 79,797.87 and 19,921.33

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Solution

The fourth proportional to 53,177.91, 79,797.87 and 19,921.33 is: 29,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,177.91 : 79,797.87 = 19,921.33 : x
  2. Step 2: Convert to fraction form
    53,177.91/79,797.87 = 19,921.33/x
  3. Step 3: Cross multiply
    53,177.91x = 79,797.87 × 19,921.33
  4. Step 4: Simplify right side
    53,177.91x = 1,589,679,701.57
  5. Step 5: Solve for x
    x = 1,589,679,701.57/53,177.91
  6. Step 6: Final answer
    x = 29,893.61

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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.