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Finding the Fourth Proportional to 81,695.40, 122,543.10 and 53,701.80

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Solution

The fourth proportional to 81,695.40, 122,543.10 and 53,701.80 is: 80,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,695.40 : 122,543.10 = 53,701.80 : x
  2. Step 2: Convert to fraction form
    81,695.40/122,543.10 = 53,701.80/x
  3. Step 3: Cross multiply
    81,695.40x = 122,543.10 × 53,701.80
  4. Step 4: Simplify right side
    81,695.40x = 6,580,785,047.58
  5. Step 5: Solve for x
    x = 6,580,785,047.58/81,695.40
  6. Step 6: Final answer
    x = 80,552.70

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