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Finding the Fourth Proportional to 67,809.20, 101,425.80 and 60,839.60

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Solution

The fourth proportional to 67,809.20, 101,425.80 and 60,839.60 is: 91,001.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,809.20 : 101,425.80 = 60,839.60 : x
  2. Step 2: Convert to fraction form
    67,809.20/101,425.80 = 60,839.60/x
  3. Step 3: Cross multiply
    67,809.20x = 101,425.80 × 60,839.60
  4. Step 4: Simplify right side
    67,809.20x = 6,170,705,101.68
  5. Step 5: Solve for x
    x = 6,170,705,101.68/67,809.20
  6. Step 6: Final answer
    x = 91,001.00

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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.