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Finding the Fourth Proportional to 47,879.70, 71,819.55 and 18,282.30

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Solution

The fourth proportional to 47,879.70, 71,819.55 and 18,282.30 is: 27,423.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,879.70 : 71,819.55 = 18,282.30 : x
  2. Step 2: Convert to fraction form
    47,879.70/71,819.55 = 18,282.30/x
  3. Step 3: Cross multiply
    47,879.70x = 71,819.55 × 18,282.30
  4. Step 4: Simplify right side
    47,879.70x = 1,313,026,558.97
  5. Step 5: Solve for x
    x = 1,313,026,558.97/47,879.70
  6. Step 6: Final answer
    x = 27,423.45

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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.