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Finding the Fourth Proportional to 70,964.46, 97,929.14 and 39,131.28

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Solution

The fourth proportional to 70,964.46, 97,929.14 and 39,131.28 is: 54,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,964.46 : 97,929.14 = 39,131.28 : x
  2. Step 2: Convert to fraction form
    70,964.46/97,929.14 = 39,131.28/x
  3. Step 3: Cross multiply
    70,964.46x = 97,929.14 × 39,131.28
  4. Step 4: Simplify right side
    70,964.46x = 3,832,092,401.84
  5. Step 5: Solve for x
    x = 3,832,092,401.84/70,964.46
  6. Step 6: Final answer
    x = 54,000.16

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