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Finding the Fourth Proportional to 85,880.40, 128,832.30 and 29,705.44

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Solution

The fourth proportional to 85,880.40, 128,832.30 and 29,705.44 is: 44,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,880.40 : 128,832.30 = 29,705.44 : x
  2. Step 2: Convert to fraction form
    85,880.40/128,832.30 = 29,705.44/x
  3. Step 3: Cross multiply
    85,880.40x = 128,832.30 × 29,705.44
  4. Step 4: Simplify right side
    85,880.40x = 3,827,020,157.71
  5. Step 5: Solve for x
    x = 3,827,020,157.71/85,880.40
  6. Step 6: Final answer
    x = 44,562.21

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