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Finding the Fourth Proportional to 67,980, 101,970 and 18,732

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Solution

The fourth proportional to 67,980, 101,970 and 18,732 is: 28,098

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,980 : 101,970 = 18,732 : x
  2. Step 2: Convert to fraction form
    67,980/101,970 = 18,732/x
  3. Step 3: Cross multiply
    67,980x = 101,970 × 18,732
  4. Step 4: Simplify right side
    67,980x = 1,910,102,040
  5. Step 5: Solve for x
    x = 1,910,102,040/67,980
  6. Step 6: Final answer
    x = 28,098

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.