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Finding the Fourth Proportional to 85,267.61, 127,879.59 and 25,282.05

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Solution

The fourth proportional to 85,267.61, 127,879.59 and 25,282.05 is: 37,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,267.61 : 127,879.59 = 25,282.05 : x
  2. Step 2: Convert to fraction form
    85,267.61/127,879.59 = 25,282.05/x
  3. Step 3: Cross multiply
    85,267.61x = 127,879.59 × 25,282.05
  4. Step 4: Simplify right side
    85,267.61x = 3,233,058,188.36
  5. Step 5: Solve for x
    x = 3,233,058,188.36/85,267.61
  6. Step 6: Final answer
    x = 37,916.61

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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.