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Finding the Fourth Proportional to 113,905.32, 170,728.31 and 50,630.39

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Solution

The fourth proportional to 113,905.32, 170,728.31 and 50,630.39 is: 75,887.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,905.32 : 170,728.31 = 50,630.39 : x
  2. Step 2: Convert to fraction form
    113,905.32/170,728.31 = 50,630.39/x
  3. Step 3: Cross multiply
    113,905.32x = 170,728.31 × 50,630.39
  4. Step 4: Simplify right side
    113,905.32x = 8,644,039,812.55
  5. Step 5: Solve for x
    x = 8,644,039,812.55/113,905.32
  6. Step 6: Final answer
    x = 75,887.94

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.