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Finding the Fourth Proportional to 51,978.42, 77,967.64 and 16,918.08

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Solution

The fourth proportional to 51,978.42, 77,967.64 and 16,918.08 is: 25,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,978.42 : 77,967.64 = 16,918.08 : x
  2. Step 2: Convert to fraction form
    51,978.42/77,967.64 = 16,918.08/x
  3. Step 3: Cross multiply
    51,978.42x = 77,967.64 × 16,918.08
  4. Step 4: Simplify right side
    51,978.42x = 1,319,062,770.93
  5. Step 5: Solve for x
    x = 1,319,062,770.93/51,978.42
  6. Step 6: Final answer
    x = 25,377.12

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