Home / 84,285.12-126,446.17-31,694.60

Finding the Fourth Proportional to 84,285.12, 126,446.17 and 31,694.60

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Solution

The fourth proportional to 84,285.12, 126,446.17 and 31,694.60 is: 47,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,285.12 : 126,446.17 = 31,694.60 : x
  2. Step 2: Convert to fraction form
    84,285.12/126,446.17 = 31,694.60/x
  3. Step 3: Cross multiply
    84,285.12x = 126,446.17 × 31,694.60
  4. Step 4: Simplify right side
    84,285.12x = 4,007,660,779.68
  5. Step 5: Solve for x
    x = 4,007,660,779.68/84,285.12
  6. Step 6: Final answer
    x = 47,548.85

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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.