Home / 84,118.62-126,141-31,491.20

Finding the Fourth Proportional to 84,118.62, 126,141 and 31,491.20

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Solution

The fourth proportional to 84,118.62, 126,141 and 31,491.20 is: 47,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,118.62 : 126,141 = 31,491.20 : x
  2. Step 2: Convert to fraction form
    84,118.62/126,141 = 31,491.20/x
  3. Step 3: Cross multiply
    84,118.62x = 126,141 × 31,491.20
  4. Step 4: Simplify right side
    84,118.62x = 3,972,331,459.20
  5. Step 5: Solve for x
    x = 3,972,331,459.20/84,118.62
  6. Step 6: Final answer
    x = 47,222.97

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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.