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Finding the Fourth Proportional to 81,935.68, 122,900.42 and 33,903

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Solution

The fourth proportional to 81,935.68, 122,900.42 and 33,903 is: 50,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,935.68 : 122,900.42 = 33,903 : x
  2. Step 2: Convert to fraction form
    81,935.68/122,900.42 = 33,903/x
  3. Step 3: Cross multiply
    81,935.68x = 122,900.42 × 33,903
  4. Step 4: Simplify right side
    81,935.68x = 4,166,692,939.26
  5. Step 5: Solve for x
    x = 4,166,692,939.26/81,935.68
  6. Step 6: Final answer
    x = 50,853.22

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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.