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Finding the Fourth Proportional to 84,207.36, 116,212.48 and 81,589.92

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Solution

The fourth proportional to 84,207.36, 116,212.48 and 81,589.92 is: 112,600.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,207.36 : 116,212.48 = 81,589.92 : x
  2. Step 2: Convert to fraction form
    84,207.36/116,212.48 = 81,589.92/x
  3. Step 3: Cross multiply
    84,207.36x = 116,212.48 × 81,589.92
  4. Step 4: Simplify right side
    84,207.36x = 9,481,766,946.20
  5. Step 5: Solve for x
    x = 9,481,766,946.20/84,207.36
  6. Step 6: Final answer
    x = 112,600.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.