Home / 76,919.30-115,427.55-45,329.30

Finding the Fourth Proportional to 76,919.30, 115,427.55 and 45,329.30

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Solution

The fourth proportional to 76,919.30, 115,427.55 and 45,329.30 is: 68,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,919.30 : 115,427.55 = 45,329.30 : x
  2. Step 2: Convert to fraction form
    76,919.30/115,427.55 = 45,329.30/x
  3. Step 3: Cross multiply
    76,919.30x = 115,427.55 × 45,329.30
  4. Step 4: Simplify right side
    76,919.30x = 5,232,250,042.22
  5. Step 5: Solve for x
    x = 5,232,250,042.22/76,919.30
  6. Step 6: Final answer
    x = 68,022.59

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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.