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Finding the Fourth Proportional to 90,735.57, 125,215.10 and 50,991.57

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Solution

The fourth proportional to 90,735.57, 125,215.10 and 50,991.57 is: 70,368.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.57 : 125,215.10 = 50,991.57 : x
  2. Step 2: Convert to fraction form
    90,735.57/125,215.10 = 50,991.57/x
  3. Step 3: Cross multiply
    90,735.57x = 125,215.10 × 50,991.57
  4. Step 4: Simplify right side
    90,735.57x = 6,384,914,281.75
  5. Step 5: Solve for x
    x = 6,384,914,281.75/90,735.57
  6. Step 6: Final answer
    x = 70,368.37

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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.