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Finding the Fourth Proportional to 69,301.92, 103,965.69 and 21,928.94

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Solution

The fourth proportional to 69,301.92, 103,965.69 and 21,928.94 is: 32,897.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,301.92 : 103,965.69 = 21,928.94 : x
  2. Step 2: Convert to fraction form
    69,301.92/103,965.69 = 21,928.94/x
  3. Step 3: Cross multiply
    69,301.92x = 103,965.69 × 21,928.94
  4. Step 4: Simplify right side
    69,301.92x = 2,279,856,858.24
  5. Step 5: Solve for x
    x = 2,279,856,858.24/69,301.92
  6. Step 6: Final answer
    x = 32,897.46

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1.5x scale

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.