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Finding the Fourth Proportional to 49,388.44, 74,086.44 and 21,309.16

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Solution

The fourth proportional to 49,388.44, 74,086.44 and 21,309.16 is: 31,965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,388.44 : 74,086.44 = 21,309.16 : x
  2. Step 2: Convert to fraction form
    49,388.44/74,086.44 = 21,309.16/x
  3. Step 3: Cross multiply
    49,388.44x = 74,086.44 × 21,309.16
  4. Step 4: Simplify right side
    49,388.44x = 1,578,719,803.79
  5. Step 5: Solve for x
    x = 1,578,719,803.79/49,388.44
  6. Step 6: Final answer
    x = 31,965.37

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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.