Home / 76,181.78-114,285.94-31,839.68

Finding the Fourth Proportional to 76,181.78, 114,285.94 and 31,839.68

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Solution

The fourth proportional to 76,181.78, 114,285.94 and 31,839.68 is: 47,765.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,181.78 : 114,285.94 = 31,839.68 : x
  2. Step 2: Convert to fraction form
    76,181.78/114,285.94 = 31,839.68/x
  3. Step 3: Cross multiply
    76,181.78x = 114,285.94 × 31,839.68
  4. Step 4: Simplify right side
    76,181.78x = 3,638,827,964.21
  5. Step 5: Solve for x
    x = 3,638,827,964.21/76,181.78
  6. Step 6: Final answer
    x = 47,765.07

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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.