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Finding the Fourth Proportional to 69,251.45, 103,858.69 and 19,322.77

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Solution

The fourth proportional to 69,251.45, 103,858.69 and 19,322.77 is: 28,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,251.45 : 103,858.69 = 19,322.77 : x
  2. Step 2: Convert to fraction form
    69,251.45/103,858.69 = 19,322.77/x
  3. Step 3: Cross multiply
    69,251.45x = 103,858.69 × 19,322.77
  4. Step 4: Simplify right side
    69,251.45x = 2,006,837,579.37
  5. Step 5: Solve for x
    x = 2,006,837,579.37/69,251.45
  6. Step 6: Final answer
    x = 28,979.00

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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.