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Finding the Fourth Proportional to 91,008, 136,512 and 25,344

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Solution

The fourth proportional to 91,008, 136,512 and 25,344 is: 38,016

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,008 : 136,512 = 25,344 : x
  2. Step 2: Convert to fraction form
    91,008/136,512 = 25,344/x
  3. Step 3: Cross multiply
    91,008x = 136,512 × 25,344
  4. Step 4: Simplify right side
    91,008x = 3,459,760,128
  5. Step 5: Solve for x
    x = 3,459,760,128/91,008
  6. Step 6: Final answer
    x = 38,016

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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.