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Finding the Fourth Proportional to 89,544.80, 134,163.60 and 42,696.80

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Solution

The fourth proportional to 89,544.80, 134,163.60 and 42,696.80 is: 63,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,544.80 : 134,163.60 = 42,696.80 : x
  2. Step 2: Convert to fraction form
    89,544.80/134,163.60 = 42,696.80/x
  3. Step 3: Cross multiply
    89,544.80x = 134,163.60 × 42,696.80
  4. Step 4: Simplify right side
    89,544.80x = 5,728,356,396.48
  5. Step 5: Solve for x
    x = 5,728,356,396.48/89,544.80
  6. Step 6: Final answer
    x = 63,971.96

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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.