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Finding the Fourth Proportional to 85,717.72, 128,596.96 and 35,770.06

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Solution

The fourth proportional to 85,717.72, 128,596.96 and 35,770.06 is: 53,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.72 : 128,596.96 = 35,770.06 : x
  2. Step 2: Convert to fraction form
    85,717.72/128,596.96 = 35,770.06/x
  3. Step 3: Cross multiply
    85,717.72x = 128,596.96 × 35,770.06
  4. Step 4: Simplify right side
    85,717.72x = 4,599,920,975.02
  5. Step 5: Solve for x
    x = 4,599,920,975.02/85,717.72
  6. Step 6: Final answer
    x = 53,663.59

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