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Finding the Fourth Proportional to 53,309.87, 79,992.48 and 21,743.09

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Solution

The fourth proportional to 53,309.87, 79,992.48 and 21,743.09 is: 32,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,309.87 : 79,992.48 = 21,743.09 : x
  2. Step 2: Convert to fraction form
    53,309.87/79,992.48 = 21,743.09/x
  3. Step 3: Cross multiply
    53,309.87x = 79,992.48 × 21,743.09
  4. Step 4: Simplify right side
    53,309.87x = 1,739,283,292.00
  5. Step 5: Solve for x
    x = 1,739,283,292.00/53,309.87
  6. Step 6: Final answer
    x = 32,625.92

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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.