Home / 84,676.12-126,912.28-31,325.56

Finding the Fourth Proportional to 84,676.12, 126,912.28 and 31,325.56

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Solution

The fourth proportional to 84,676.12, 126,912.28 and 31,325.56 is: 46,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,676.12 : 126,912.28 = 31,325.56 : x
  2. Step 2: Convert to fraction form
    84,676.12/126,912.28 = 31,325.56/x
  3. Step 3: Cross multiply
    84,676.12x = 126,912.28 × 31,325.56
  4. Step 4: Simplify right side
    84,676.12x = 3,975,598,241.88
  5. Step 5: Solve for x
    x = 3,975,598,241.88/84,676.12
  6. Step 6: Final answer
    x = 46,950.64

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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.