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Finding the Fourth Proportional to 61,958.28, 85,509.72 and 36,807.78

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Solution

The fourth proportional to 61,958.28, 85,509.72 and 36,807.78 is: 50,799.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,958.28 : 85,509.72 = 36,807.78 : x
  2. Step 2: Convert to fraction form
    61,958.28/85,509.72 = 36,807.78/x
  3. Step 3: Cross multiply
    61,958.28x = 85,509.72 × 36,807.78
  4. Step 4: Simplify right side
    61,958.28x = 3,147,422,961.62
  5. Step 5: Solve for x
    x = 3,147,422,961.62/61,958.28
  6. Step 6: Final answer
    x = 50,799.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.