Home / 84,288.62-126,451.42-31,698.11

Finding the Fourth Proportional to 84,288.62, 126,451.42 and 31,698.11

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Solution

The fourth proportional to 84,288.62, 126,451.42 and 31,698.11 is: 47,554.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,288.62 : 126,451.42 = 31,698.11 : x
  2. Step 2: Convert to fraction form
    84,288.62/126,451.42 = 31,698.11/x
  3. Step 3: Cross multiply
    84,288.62x = 126,451.42 × 31,698.11
  4. Step 4: Simplify right side
    84,288.62x = 4,008,271,257.70
  5. Step 5: Solve for x
    x = 4,008,271,257.70/84,288.62
  6. Step 6: Final answer
    x = 47,554.12

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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.