Home / 77,968.85-107,609.15-51,189.04

Finding the Fourth Proportional to 77,968.85, 107,609.15 and 51,189.04

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Solution

The fourth proportional to 77,968.85, 107,609.15 and 51,189.04 is: 70,648.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,968.85 : 107,609.15 = 51,189.04 : x
  2. Step 2: Convert to fraction form
    77,968.85/107,609.15 = 51,189.04/x
  3. Step 3: Cross multiply
    77,968.85x = 107,609.15 × 51,189.04
  4. Step 4: Simplify right side
    77,968.85x = 5,508,408,289.73
  5. Step 5: Solve for x
    x = 5,508,408,289.73/77,968.85
  6. Step 6: Final answer
    x = 70,648.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.