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Finding the Fourth Proportional to 69,928.64, 96,606.97 and 56,476.54

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Solution

The fourth proportional to 69,928.64, 96,606.97 and 56,476.54 is: 78,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,928.64 : 96,606.97 = 56,476.54 : x
  2. Step 2: Convert to fraction form
    69,928.64/96,606.97 = 56,476.54/x
  3. Step 3: Cross multiply
    69,928.64x = 96,606.97 × 56,476.54
  4. Step 4: Simplify right side
    69,928.64x = 5,456,027,022.78
  5. Step 5: Solve for x
    x = 5,456,027,022.78/69,928.64
  6. Step 6: Final answer
    x = 78,022.79

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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.