Home / 84,431.44-126,647.12-31,828.62

Finding the Fourth Proportional to 84,431.44, 126,647.12 and 31,828.62

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Solution

The fourth proportional to 84,431.44, 126,647.12 and 31,828.62 is: 47,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,431.44 : 126,647.12 = 31,828.62 : x
  2. Step 2: Convert to fraction form
    84,431.44/126,647.12 = 31,828.62/x
  3. Step 3: Cross multiply
    84,431.44x = 126,647.12 × 31,828.62
  4. Step 4: Simplify right side
    84,431.44x = 4,031,003,056.57
  5. Step 5: Solve for x
    x = 4,031,003,056.57/84,431.44
  6. Step 6: Final answer
    x = 47,742.91

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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.