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Finding the Fourth Proportional to 67,287.42, 101,020.41 and 57,489.66

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Solution

The fourth proportional to 67,287.42, 101,020.41 and 57,489.66 is: 86,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,287.42 : 101,020.41 = 57,489.66 : x
  2. Step 2: Convert to fraction form
    67,287.42/101,020.41 = 57,489.66/x
  3. Step 3: Cross multiply
    67,287.42x = 101,020.41 × 57,489.66
  4. Step 4: Simplify right side
    67,287.42x = 5,807,629,023.96
  5. Step 5: Solve for x
    x = 5,807,629,023.96/67,287.42
  6. Step 6: Final answer
    x = 86,310.77

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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.