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Finding the Fourth Proportional to 67,066.73, 100,615.68 and 19,679.91

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Solution

The fourth proportional to 67,066.73, 100,615.68 and 19,679.91 is: 29,524.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,066.73 : 100,615.68 = 19,679.91 : x
  2. Step 2: Convert to fraction form
    67,066.73/100,615.68 = 19,679.91/x
  3. Step 3: Cross multiply
    67,066.73x = 100,615.68 × 19,679.91
  4. Step 4: Simplify right side
    67,066.73x = 1,980,107,526.99
  5. Step 5: Solve for x
    x = 1,980,107,526.99/67,066.73
  6. Step 6: Final answer
    x = 29,524.44

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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.