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Finding the Fourth Proportional to 57,130.47, 78,815.59 and 34,456.56

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Solution

The fourth proportional to 57,130.47, 78,815.59 and 34,456.56 is: 47,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.47 : 78,815.59 = 34,456.56 : x
  2. Step 2: Convert to fraction form
    57,130.47/78,815.59 = 34,456.56/x
  3. Step 3: Cross multiply
    57,130.47x = 78,815.59 × 34,456.56
  4. Step 4: Simplify right side
    57,130.47x = 2,715,714,105.77
  5. Step 5: Solve for x
    x = 2,715,714,105.77/57,130.47
  6. Step 6: Final answer
    x = 47,535.30

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