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Finding the Fourth Proportional to 30,406.50, 41,961.78 and 16,978.32

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Solution

The fourth proportional to 30,406.50, 41,961.78 and 16,978.32 is: 23,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406.50 : 41,961.78 = 16,978.32 : x
  2. Step 2: Convert to fraction form
    30,406.50/41,961.78 = 16,978.32/x
  3. Step 3: Cross multiply
    30,406.50x = 41,961.78 × 16,978.32
  4. Step 4: Simplify right side
    30,406.50x = 712,440,528.61
  5. Step 5: Solve for x
    x = 712,440,528.61/30,406.50
  6. Step 6: Final answer
    x = 23,430.53

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