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Finding the Fourth Proportional to 56,980.94, 78,638.43 and 31,492.28

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Solution

The fourth proportional to 56,980.94, 78,638.43 and 31,492.28 is: 43,461.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,980.94 : 78,638.43 = 31,492.28 : x
  2. Step 2: Convert to fraction form
    56,980.94/78,638.43 = 31,492.28/x
  3. Step 3: Cross multiply
    56,980.94x = 78,638.43 × 31,492.28
  4. Step 4: Simplify right side
    56,980.94x = 2,476,503,461.27
  5. Step 5: Solve for x
    x = 2,476,503,461.27/56,980.94
  6. Step 6: Final answer
    x = 43,461.96

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