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Finding the Fourth Proportional to 53,581.25, 80,388.54 and 21,993.89

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Solution

The fourth proportional to 53,581.25, 80,388.54 and 21,993.89 is: 32,997.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,581.25 : 80,388.54 = 21,993.89 : x
  2. Step 2: Convert to fraction form
    53,581.25/80,388.54 = 21,993.89/x
  3. Step 3: Cross multiply
    53,581.25x = 80,388.54 × 21,993.89
  4. Step 4: Simplify right side
    53,581.25x = 1,768,056,706.02
  5. Step 5: Solve for x
    x = 1,768,056,706.02/53,581.25
  6. Step 6: Final answer
    x = 32,997.68

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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.