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Finding the Fourth Proportional to 85,115.10, 127,629.90 and 49,588.14

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Solution

The fourth proportional to 85,115.10, 127,629.90 and 49,588.14 is: 74,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.10 : 127,629.90 = 49,588.14 : x
  2. Step 2: Convert to fraction form
    85,115.10/127,629.90 = 49,588.14/x
  3. Step 3: Cross multiply
    85,115.10x = 127,629.90 × 49,588.14
  4. Step 4: Simplify right side
    85,115.10x = 6,328,929,349.39
  5. Step 5: Solve for x
    x = 6,328,929,349.39/85,115.10
  6. Step 6: Final answer
    x = 74,357.30

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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.