Home / 81,654.36-122,450.04-31,727.88

Finding the Fourth Proportional to 81,654.36, 122,450.04 and 31,727.88

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Solution

The fourth proportional to 81,654.36, 122,450.04 and 31,727.88 is: 47,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.36 : 122,450.04 = 31,727.88 : x
  2. Step 2: Convert to fraction form
    81,654.36/122,450.04 = 31,727.88/x
  3. Step 3: Cross multiply
    81,654.36x = 122,450.04 × 31,727.88
  4. Step 4: Simplify right side
    81,654.36x = 3,885,080,175.12
  5. Step 5: Solve for x
    x = 3,885,080,175.12/81,654.36
  6. Step 6: Final answer
    x = 47,579.58

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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.