Home / 81,461.60-122,115.78-43,965.48

Finding the Fourth Proportional to 81,461.60, 122,115.78 and 43,965.48

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Solution

The fourth proportional to 81,461.60, 122,115.78 and 43,965.48 is: 65,906.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,461.60 : 122,115.78 = 43,965.48 : x
  2. Step 2: Convert to fraction form
    81,461.60/122,115.78 = 43,965.48/x
  3. Step 3: Cross multiply
    81,461.60x = 122,115.78 × 43,965.48
  4. Step 4: Simplify right side
    81,461.60x = 5,368,878,883.27
  5. Step 5: Solve for x
    x = 5,368,878,883.27/81,461.60
  6. Step 6: Final answer
    x = 65,906.87

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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.