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Finding the Fourth Proportional to 73,939.84, 110,908.06 and 20,630.41

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Solution

The fourth proportional to 73,939.84, 110,908.06 and 20,630.41 is: 30,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,939.84 : 110,908.06 = 20,630.41 : x
  2. Step 2: Convert to fraction form
    73,939.84/110,908.06 = 20,630.41/x
  3. Step 3: Cross multiply
    73,939.84x = 110,908.06 × 20,630.41
  4. Step 4: Simplify right side
    73,939.84x = 2,288,078,750.10
  5. Step 5: Solve for x
    x = 2,288,078,750.10/73,939.84
  6. Step 6: Final answer
    x = 30,945.14

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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.