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Finding the Fourth Proportional to 47,889.85, 71,809.80 and 17,879.38

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Solution

The fourth proportional to 47,889.85, 71,809.80 and 17,879.38 is: 26,809.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,889.85 : 71,809.80 = 17,879.38 : x
  2. Step 2: Convert to fraction form
    47,889.85/71,809.80 = 17,879.38/x
  3. Step 3: Cross multiply
    47,889.85x = 71,809.80 × 17,879.38
  4. Step 4: Simplify right side
    47,889.85x = 1,283,914,701.92
  5. Step 5: Solve for x
    x = 1,283,914,701.92/47,889.85
  6. Step 6: Final answer
    x = 26,809.75

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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.