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Finding the Fourth Proportional to 78,011.60, 117,029.54 and 25,408.84

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Solution

The fourth proportional to 78,011.60, 117,029.54 and 25,408.84 is: 38,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011.60 : 117,029.54 = 25,408.84 : x
  2. Step 2: Convert to fraction form
    78,011.60/117,029.54 = 25,408.84/x
  3. Step 3: Cross multiply
    78,011.60x = 117,029.54 × 25,408.84
  4. Step 4: Simplify right side
    78,011.60x = 2,973,584,857.13
  5. Step 5: Solve for x
    x = 2,973,584,857.13/78,011.60
  6. Step 6: Final answer
    x = 38,117.21

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