Home / 75,845.66-113,767.56-19,680.77

Finding the Fourth Proportional to 75,845.66, 113,767.56 and 19,680.77

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Solution

The fourth proportional to 75,845.66, 113,767.56 and 19,680.77 is: 29,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,845.66 : 113,767.56 = 19,680.77 : x
  2. Step 2: Convert to fraction form
    75,845.66/113,767.56 = 19,680.77/x
  3. Step 3: Cross multiply
    75,845.66x = 113,767.56 × 19,680.77
  4. Step 4: Simplify right side
    75,845.66x = 2,239,033,181.82
  5. Step 5: Solve for x
    x = 2,239,033,181.82/75,845.66
  6. Step 6: Final answer
    x = 29,520.91

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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.