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Finding the Fourth Proportional to 80,896.84, 121,266.87 and 30,938.47

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Solution

The fourth proportional to 80,896.84, 121,266.87 and 30,938.47 is: 46,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,896.84 : 121,266.87 = 30,938.47 : x
  2. Step 2: Convert to fraction form
    80,896.84/121,266.87 = 30,938.47/x
  3. Step 3: Cross multiply
    80,896.84x = 121,266.87 × 30,938.47
  4. Step 4: Simplify right side
    80,896.84x = 3,751,811,419.49
  5. Step 5: Solve for x
    x = 3,751,811,419.49/80,896.84
  6. Step 6: Final answer
    x = 46,377.73

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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.