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Finding the Fourth Proportional to 56,961.60, 85,240.80 and 49,646.40

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Solution

The fourth proportional to 56,961.60, 85,240.80 and 49,646.40 is: 74,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,961.60 : 85,240.80 = 49,646.40 : x
  2. Step 2: Convert to fraction form
    56,961.60/85,240.80 = 49,646.40/x
  3. Step 3: Cross multiply
    56,961.60x = 85,240.80 × 49,646.40
  4. Step 4: Simplify right side
    56,961.60x = 4,231,898,853.12
  5. Step 5: Solve for x
    x = 4,231,898,853.12/56,961.60
  6. Step 6: Final answer
    x = 74,293.89

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