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Finding the Fourth Proportional to 109,322.78, 150,866.28 and 61,571.66

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Solution

The fourth proportional to 109,322.78, 150,866.28 and 61,571.66 is: 84,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,322.78 : 150,866.28 = 61,571.66 : x
  2. Step 2: Convert to fraction form
    109,322.78/150,866.28 = 61,571.66/x
  3. Step 3: Cross multiply
    109,322.78x = 150,866.28 × 61,571.66
  4. Step 4: Simplify right side
    109,322.78x = 9,289,087,297.62
  5. Step 5: Solve for x
    x = 9,289,087,297.62/109,322.78
  6. Step 6: Final answer
    x = 84,969.37

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Why These Related Problems?

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