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Finding the Fourth Proportional to 85,415.58, 117,875.34 and 47,689.92

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Solution

The fourth proportional to 85,415.58, 117,875.34 and 47,689.92 is: 65,813.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,415.58 : 117,875.34 = 47,689.92 : x
  2. Step 2: Convert to fraction form
    85,415.58/117,875.34 = 47,689.92/x
  3. Step 3: Cross multiply
    85,415.58x = 117,875.34 × 47,689.92
  4. Step 4: Simplify right side
    85,415.58x = 5,621,465,534.57
  5. Step 5: Solve for x
    x = 5,621,465,534.57/85,415.58
  6. Step 6: Final answer
    x = 65,813.12

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