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Finding the Fourth Proportional to 85,104.77, 127,679.72 and 25,940.97

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Solution

The fourth proportional to 85,104.77, 127,679.72 and 25,940.97 is: 38,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,104.77 : 127,679.72 = 25,940.97 : x
  2. Step 2: Convert to fraction form
    85,104.77/127,679.72 = 25,940.97/x
  3. Step 3: Cross multiply
    85,104.77x = 127,679.72 × 25,940.97
  4. Step 4: Simplify right side
    85,104.77x = 3,312,135,656.42
  5. Step 5: Solve for x
    x = 3,312,135,656.42/85,104.77
  6. Step 6: Final answer
    x = 38,918.33

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1.5x scale

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.