Home / 87,973.11-131,958.54-21,413.30

Finding the Fourth Proportional to 87,973.11, 131,958.54 and 21,413.30

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Solution

The fourth proportional to 87,973.11, 131,958.54 and 21,413.30 is: 32,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973.11 : 131,958.54 = 21,413.30 : x
  2. Step 2: Convert to fraction form
    87,973.11/131,958.54 = 21,413.30/x
  3. Step 3: Cross multiply
    87,973.11x = 131,958.54 × 21,413.30
  4. Step 4: Simplify right side
    87,973.11x = 2,825,667,144.79
  5. Step 5: Solve for x
    x = 2,825,667,144.79/87,973.11
  6. Step 6: Final answer
    x = 32,119.67

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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.