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Finding the Fourth Proportional to 74,978.67, 112,412.43 and 45,389.52

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Solution

The fourth proportional to 74,978.67, 112,412.43 and 45,389.52 is: 68,050.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,978.67 : 112,412.43 = 45,389.52 : x
  2. Step 2: Convert to fraction form
    74,978.67/112,412.43 = 45,389.52/x
  3. Step 3: Cross multiply
    74,978.67x = 112,412.43 × 45,389.52
  4. Step 4: Simplify right side
    74,978.67x = 5,102,346,239.73
  5. Step 5: Solve for x
    x = 5,102,346,239.73/74,978.67
  6. Step 6: Final answer
    x = 68,050.64

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