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Finding the Fourth Proportional to 67,978, 101,967 and 18,730

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Solution

The fourth proportional to 67,978, 101,967 and 18,730 is: 28,095

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,978 : 101,967 = 18,730 : x
  2. Step 2: Convert to fraction form
    67,978/101,967 = 18,730/x
  3. Step 3: Cross multiply
    67,978x = 101,967 × 18,730
  4. Step 4: Simplify right side
    67,978x = 1,909,841,910
  5. Step 5: Solve for x
    x = 1,909,841,910/67,978
  6. Step 6: Final answer
    x = 28,095

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