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Finding the Fourth Proportional to 53,231.63, 79,860.94 and 19,951.79

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Solution

The fourth proportional to 53,231.63, 79,860.94 and 19,951.79 is: 29,932.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,231.63 : 79,860.94 = 19,951.79 : x
  2. Step 2: Convert to fraction form
    53,231.63/79,860.94 = 19,951.79/x
  3. Step 3: Cross multiply
    53,231.63x = 79,860.94 × 19,951.79
  4. Step 4: Simplify right side
    53,231.63x = 1,593,368,254.90
  5. Step 5: Solve for x
    x = 1,593,368,254.90/53,231.63
  6. Step 6: Final answer
    x = 29,932.74

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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.