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Finding the Fourth Proportional to 60,809.39, 91,218.94 and 21,375.35

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Solution

The fourth proportional to 60,809.39, 91,218.94 and 21,375.35 is: 32,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,809.39 : 91,218.94 = 21,375.35 : x
  2. Step 2: Convert to fraction form
    60,809.39/91,218.94 = 21,375.35/x
  3. Step 3: Cross multiply
    60,809.39x = 91,218.94 × 21,375.35
  4. Step 4: Simplify right side
    60,809.39x = 1,949,836,313.03
  5. Step 5: Solve for x
    x = 1,949,836,313.03/60,809.39
  6. Step 6: Final answer
    x = 32,064.73

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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.