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Finding the Fourth Proportional to 84,846.78, 127,076.40 and 40,504.68

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Solution

The fourth proportional to 84,846.78, 127,076.40 and 40,504.68 is: 60,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,846.78 : 127,076.40 = 40,504.68 : x
  2. Step 2: Convert to fraction form
    84,846.78/127,076.40 = 40,504.68/x
  3. Step 3: Cross multiply
    84,846.78x = 127,076.40 × 40,504.68
  4. Step 4: Simplify right side
    84,846.78x = 5,147,188,917.55
  5. Step 5: Solve for x
    x = 5,147,188,917.55/84,846.78
  6. Step 6: Final answer
    x = 60,664.52

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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.