Home / 84,450.67-126,694.06-31,142.79

Finding the Fourth Proportional to 84,450.67, 126,694.06 and 31,142.79

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Solution

The fourth proportional to 84,450.67, 126,694.06 and 31,142.79 is: 46,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,450.67 : 126,694.06 = 31,142.79 : x
  2. Step 2: Convert to fraction form
    84,450.67/126,694.06 = 31,142.79/x
  3. Step 3: Cross multiply
    84,450.67x = 126,694.06 × 31,142.79
  4. Step 4: Simplify right side
    84,450.67x = 3,945,606,426.97
  5. Step 5: Solve for x
    x = 3,945,606,426.97/84,450.67
  6. Step 6: Final answer
    x = 46,720.84

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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.