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Finding the Fourth Proportional to 36,292, 50,087.28 and 21,388

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Solution

The fourth proportional to 36,292, 50,087.28 and 21,388 is: 29,517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,292 : 50,087.28 = 21,388 : x
  2. Step 2: Convert to fraction form
    36,292/50,087.28 = 21,388/x
  3. Step 3: Cross multiply
    36,292x = 50,087.28 × 21,388
  4. Step 4: Simplify right side
    36,292x = 1,071,266,744.64
  5. Step 5: Solve for x
    x = 1,071,266,744.64/36,292
  6. Step 6: Final answer
    x = 29,517.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.