Home / 77,711.92-116,553.66-20,786.56

Finding the Fourth Proportional to 77,711.92, 116,553.66 and 20,786.56

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Solution

The fourth proportional to 77,711.92, 116,553.66 and 20,786.56 is: 31,176.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,711.92 : 116,553.66 = 20,786.56 : x
  2. Step 2: Convert to fraction form
    77,711.92/116,553.66 = 20,786.56/x
  3. Step 3: Cross multiply
    77,711.92x = 116,553.66 × 20,786.56
  4. Step 4: Simplify right side
    77,711.92x = 2,422,749,646.81
  5. Step 5: Solve for x
    x = 2,422,749,646.81/77,711.92
  6. Step 6: Final answer
    x = 31,176.04

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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.