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Finding the Fourth Proportional to 73,978, 102,090 and 40,444

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Solution

The fourth proportional to 73,978, 102,090 and 40,444 is: 55,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,978 : 102,090 = 40,444 : x
  2. Step 2: Convert to fraction form
    73,978/102,090 = 40,444/x
  3. Step 3: Cross multiply
    73,978x = 102,090 × 40,444
  4. Step 4: Simplify right side
    73,978x = 4,128,927,960
  5. Step 5: Solve for x
    x = 4,128,927,960/73,978
  6. Step 6: Final answer
    x = 55,812.92

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