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Finding the Fourth Proportional to 42,729.80, 64,038.92 and 30,923.33

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Solution

The fourth proportional to 42,729.80, 64,038.92 and 30,923.33 is: 46,344.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.80 : 64,038.92 = 30,923.33 : x
  2. Step 2: Convert to fraction form
    42,729.80/64,038.92 = 30,923.33/x
  3. Step 3: Cross multiply
    42,729.80x = 64,038.92 × 30,923.33
  4. Step 4: Simplify right side
    42,729.80x = 1,980,296,181.19
  5. Step 5: Solve for x
    x = 1,980,296,181.19/42,729.80
  6. Step 6: Final answer
    x = 46,344.62

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