Home / 81,002.43-111,736.80-48,714.75

Finding the Fourth Proportional to 81,002.43, 111,736.80 and 48,714.75

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Solution

The fourth proportional to 81,002.43, 111,736.80 and 48,714.75 is: 67,198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,002.43 : 111,736.80 = 48,714.75 : x
  2. Step 2: Convert to fraction form
    81,002.43/111,736.80 = 48,714.75/x
  3. Step 3: Cross multiply
    81,002.43x = 111,736.80 × 48,714.75
  4. Step 4: Simplify right side
    81,002.43x = 5,443,230,277.80
  5. Step 5: Solve for x
    x = 5,443,230,277.80/81,002.43
  6. Step 6: Final answer
    x = 67,198.36

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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.