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Finding the Fourth Proportional to 81,676.83, 112,751.91 and 54,498.09

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Solution

The fourth proportional to 81,676.83, 112,751.91 and 54,498.09 is: 75,232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,676.83 : 112,751.91 = 54,498.09 : x
  2. Step 2: Convert to fraction form
    81,676.83/112,751.91 = 54,498.09/x
  3. Step 3: Cross multiply
    81,676.83x = 112,751.91 × 54,498.09
  4. Step 4: Simplify right side
    81,676.83x = 6,144,763,738.85
  5. Step 5: Solve for x
    x = 6,144,763,738.85/81,676.83
  6. Step 6: Final answer
    x = 75,232.64

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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.