Home / 47,890.98-71,819.19-20,191.14

Finding the Fourth Proportional to 47,890.98, 71,819.19 and 20,191.14

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Solution

The fourth proportional to 47,890.98, 71,819.19 and 20,191.14 is: 30,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,890.98 : 71,819.19 = 20,191.14 : x
  2. Step 2: Convert to fraction form
    47,890.98/71,819.19 = 20,191.14/x
  3. Step 3: Cross multiply
    47,890.98x = 71,819.19 × 20,191.14
  4. Step 4: Simplify right side
    47,890.98x = 1,450,111,319.98
  5. Step 5: Solve for x
    x = 1,450,111,319.98/47,890.98
  6. Step 6: Final answer
    x = 30,279.42

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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.