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Finding the Fourth Proportional to 85,064.96, 127,616.54 and 25,905.30

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Solution

The fourth proportional to 85,064.96, 127,616.54 and 25,905.30 is: 38,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,064.96 : 127,616.54 = 25,905.30 : x
  2. Step 2: Convert to fraction form
    85,064.96/127,616.54 = 25,905.30/x
  3. Step 3: Cross multiply
    85,064.96x = 127,616.54 × 25,905.30
  4. Step 4: Simplify right side
    85,064.96x = 3,305,944,753.66
  5. Step 5: Solve for x
    x = 3,305,944,753.66/85,064.96
  6. Step 6: Final answer
    x = 38,863.77

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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.