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Finding the Fourth Proportional to 85,267.30, 127,879.13 and 25,281.75

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Solution

The fourth proportional to 85,267.30, 127,879.13 and 25,281.75 is: 37,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,267.30 : 127,879.13 = 25,281.75 : x
  2. Step 2: Convert to fraction form
    85,267.30/127,879.13 = 25,281.75/x
  3. Step 3: Cross multiply
    85,267.30x = 127,879.13 × 25,281.75
  4. Step 4: Simplify right side
    85,267.30x = 3,233,008,194.88
  5. Step 5: Solve for x
    x = 3,233,008,194.88/85,267.30
  6. Step 6: Final answer
    x = 37,916.16

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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.