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Finding the Fourth Proportional to 81,259.94, 121,912.33 and 33,897.29

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Solution

The fourth proportional to 81,259.94, 121,912.33 and 33,897.29 is: 50,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,259.94 : 121,912.33 = 33,897.29 : x
  2. Step 2: Convert to fraction form
    81,259.94/121,912.33 = 33,897.29/x
  3. Step 3: Cross multiply
    81,259.94x = 121,912.33 × 33,897.29
  4. Step 4: Simplify right side
    81,259.94x = 4,132,497,646.96
  5. Step 5: Solve for x
    x = 4,132,497,646.96/81,259.94
  6. Step 6: Final answer
    x = 50,855.29

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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.