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Finding the Fourth Proportional to 70,349.97, 105,513.56 and 25,997.61

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Solution

The fourth proportional to 70,349.97, 105,513.56 and 25,997.61 is: 38,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,349.97 : 105,513.56 = 25,997.61 : x
  2. Step 2: Convert to fraction form
    70,349.97/105,513.56 = 25,997.61/x
  3. Step 3: Cross multiply
    70,349.97x = 105,513.56 × 25,997.61
  4. Step 4: Simplify right side
    70,349.97x = 2,743,100,252.60
  5. Step 5: Solve for x
    x = 2,743,100,252.60/70,349.97
  6. Step 6: Final answer
    x = 38,992.20

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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.