Home / 81,292.92-121,951.01-25,137.38

Finding the Fourth Proportional to 81,292.92, 121,951.01 and 25,137.38

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Solution

The fourth proportional to 81,292.92, 121,951.01 and 25,137.38 is: 37,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.92 : 121,951.01 = 25,137.38 : x
  2. Step 2: Convert to fraction form
    81,292.92/121,951.01 = 25,137.38/x
  3. Step 3: Cross multiply
    81,292.92x = 121,951.01 × 25,137.38
  4. Step 4: Simplify right side
    81,292.92x = 3,065,528,879.75
  5. Step 5: Solve for x
    x = 3,065,528,879.75/81,292.92
  6. Step 6: Final answer
    x = 37,709.67

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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.