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Finding the Fourth Proportional to 79,431.90, 109,588.60 and 50,768.34

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Solution

The fourth proportional to 79,431.90, 109,588.60 and 50,768.34 is: 70,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,431.90 : 109,588.60 = 50,768.34 : x
  2. Step 2: Convert to fraction form
    79,431.90/109,588.60 = 50,768.34/x
  3. Step 3: Cross multiply
    79,431.90x = 109,588.60 × 50,768.34
  4. Step 4: Simplify right side
    79,431.90x = 5,563,630,957.43
  5. Step 5: Solve for x
    x = 5,563,630,957.43/79,431.90
  6. Step 6: Final answer
    x = 70,042.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.