Home / 77,212.28-115,819.64-30,464.75

Finding the Fourth Proportional to 77,212.28, 115,819.64 and 30,464.75

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Solution

The fourth proportional to 77,212.28, 115,819.64 and 30,464.75 is: 45,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212.28 : 115,819.64 = 30,464.75 : x
  2. Step 2: Convert to fraction form
    77,212.28/115,819.64 = 30,464.75/x
  3. Step 3: Cross multiply
    77,212.28x = 115,819.64 × 30,464.75
  4. Step 4: Simplify right side
    77,212.28x = 3,528,416,377.69
  5. Step 5: Solve for x
    x = 3,528,416,377.69/77,212.28
  6. Step 6: Final answer
    x = 45,697.61

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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.