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Finding the Fourth Proportional to 86,604.44, 129,947.67 and 59,991.39

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Solution

The fourth proportional to 86,604.44, 129,947.67 and 59,991.39 is: 90,015.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,604.44 : 129,947.67 = 59,991.39 : x
  2. Step 2: Convert to fraction form
    86,604.44/129,947.67 = 59,991.39/x
  3. Step 3: Cross multiply
    86,604.44x = 129,947.67 × 59,991.39
  4. Step 4: Simplify right side
    86,604.44x = 7,795,741,350.56
  5. Step 5: Solve for x
    x = 7,795,741,350.56/86,604.44
  6. Step 6: Final answer
    x = 90,015.50

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Why These Related Problems?

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