Home / 47,879.40-71,819.10-12,822.60

Finding the Fourth Proportional to 47,879.40, 71,819.10 and 12,822.60

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Solution

The fourth proportional to 47,879.40, 71,819.10 and 12,822.60 is: 19,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,879.40 : 71,819.10 = 12,822.60 : x
  2. Step 2: Convert to fraction form
    47,879.40/71,819.10 = 12,822.60/x
  3. Step 3: Cross multiply
    47,879.40x = 71,819.10 × 12,822.60
  4. Step 4: Simplify right side
    47,879.40x = 920,907,591.66
  5. Step 5: Solve for x
    x = 920,907,591.66/47,879.40
  6. Step 6: Final answer
    x = 19,233.90

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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.