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Finding the Fourth Proportional to 68,809.20, 103,213.80 and 22,066.80

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Solution

The fourth proportional to 68,809.20, 103,213.80 and 22,066.80 is: 33,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809.20 : 103,213.80 = 22,066.80 : x
  2. Step 2: Convert to fraction form
    68,809.20/103,213.80 = 22,066.80/x
  3. Step 3: Cross multiply
    68,809.20x = 103,213.80 × 22,066.80
  4. Step 4: Simplify right side
    68,809.20x = 2,277,598,281.84
  5. Step 5: Solve for x
    x = 2,277,598,281.84/68,809.20
  6. Step 6: Final answer
    x = 33,100.20

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1.5x scale

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.