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Finding the Fourth Proportional to 53,712.98, 74,115.68 and 31,047.60

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Solution

The fourth proportional to 53,712.98, 74,115.68 and 31,047.60 is: 42,840.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,712.98 : 74,115.68 = 31,047.60 : x
  2. Step 2: Convert to fraction form
    53,712.98/74,115.68 = 31,047.60/x
  3. Step 3: Cross multiply
    53,712.98x = 74,115.68 × 31,047.60
  4. Step 4: Simplify right side
    53,712.98x = 2,301,113,986.37
  5. Step 5: Solve for x
    x = 2,301,113,986.37/53,712.98
  6. Step 6: Final answer
    x = 42,840.93

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