Home / 81,434.30-122,260.80-51,982.70

Finding the Fourth Proportional to 81,434.30, 122,260.80 and 51,982.70

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Solution

The fourth proportional to 81,434.30, 122,260.80 and 51,982.70 is: 78,043.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,434.30 : 122,260.80 = 51,982.70 : x
  2. Step 2: Convert to fraction form
    81,434.30/122,260.80 = 51,982.70/x
  3. Step 3: Cross multiply
    81,434.30x = 122,260.80 × 51,982.70
  4. Step 4: Simplify right side
    81,434.30x = 6,355,446,488.16
  5. Step 5: Solve for x
    x = 6,355,446,488.16/81,434.30
  6. Step 6: Final answer
    x = 78,043.85

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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.