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Finding the Fourth Proportional to 67,261.41, 100,839.80 and 43,518.79

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Solution

The fourth proportional to 67,261.41, 100,839.80 and 43,518.79 is: 65,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,261.41 : 100,839.80 = 43,518.79 : x
  2. Step 2: Convert to fraction form
    67,261.41/100,839.80 = 43,518.79/x
  3. Step 3: Cross multiply
    67,261.41x = 100,839.80 × 43,518.79
  4. Step 4: Simplify right side
    67,261.41x = 4,388,426,079.84
  5. Step 5: Solve for x
    x = 4,388,426,079.84/67,261.41
  6. Step 6: Final answer
    x = 65,244.34

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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.