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Finding the Fourth Proportional to 70,947.76, 97,906.32 and 39,115.84

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Solution

The fourth proportional to 70,947.76, 97,906.32 and 39,115.84 is: 53,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,947.76 : 97,906.32 = 39,115.84 : x
  2. Step 2: Convert to fraction form
    70,947.76/97,906.32 = 39,115.84/x
  3. Step 3: Cross multiply
    70,947.76x = 97,906.32 × 39,115.84
  4. Step 4: Simplify right side
    70,947.76x = 3,829,687,948.11
  5. Step 5: Solve for x
    x = 3,829,687,948.11/70,947.76
  6. Step 6: Final answer
    x = 53,978.98

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