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Finding the Fourth Proportional to 85,273.08, 127,921.28 and 29,098.08

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Solution

The fourth proportional to 85,273.08, 127,921.28 and 29,098.08 is: 43,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,273.08 : 127,921.28 = 29,098.08 : x
  2. Step 2: Convert to fraction form
    85,273.08/127,921.28 = 29,098.08/x
  3. Step 3: Cross multiply
    85,273.08x = 127,921.28 × 29,098.08
  4. Step 4: Simplify right side
    85,273.08x = 3,722,263,639.14
  5. Step 5: Solve for x
    x = 3,722,263,639.14/85,273.08
  6. Step 6: Final answer
    x = 43,651.10

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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.