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Finding the Fourth Proportional to 84,843.92, 127,270.28 and 21,664.64

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Solution

The fourth proportional to 84,843.92, 127,270.28 and 21,664.64 is: 32,498.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,843.92 : 127,270.28 = 21,664.64 : x
  2. Step 2: Convert to fraction form
    84,843.92/127,270.28 = 21,664.64/x
  3. Step 3: Cross multiply
    84,843.92x = 127,270.28 × 21,664.64
  4. Step 4: Simplify right side
    84,843.92x = 2,757,264,798.90
  5. Step 5: Solve for x
    x = 2,757,264,798.90/84,843.92
  6. Step 6: Final answer
    x = 32,498.08

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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.