Home / 81,356.40-121,856.94-33,827.38

Finding the Fourth Proportional to 81,356.40, 121,856.94 and 33,827.38

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Solution

The fourth proportional to 81,356.40, 121,856.94 and 33,827.38 is: 50,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,356.40 : 121,856.94 = 33,827.38 : x
  2. Step 2: Convert to fraction form
    81,356.40/121,856.94 = 33,827.38/x
  3. Step 3: Cross multiply
    81,356.40x = 121,856.94 × 33,827.38
  4. Step 4: Simplify right side
    81,356.40x = 4,122,101,015.02
  5. Step 5: Solve for x
    x = 4,122,101,015.02/81,356.40
  6. Step 6: Final answer
    x = 50,667.20

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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.