Home / 81,355.40-121,855.44-33,826.38

Finding the Fourth Proportional to 81,355.40, 121,855.44 and 33,826.38

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Solution

The fourth proportional to 81,355.40, 121,855.44 and 33,826.38 is: 50,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,355.40 : 121,855.44 = 33,826.38 : x
  2. Step 2: Convert to fraction form
    81,355.40/121,855.44 = 33,826.38/x
  3. Step 3: Cross multiply
    81,355.40x = 121,855.44 × 33,826.38
  4. Step 4: Simplify right side
    81,355.40x = 4,121,927,898.12
  5. Step 5: Solve for x
    x = 4,121,927,898.12/81,355.40
  6. Step 6: Final answer
    x = 50,665.69

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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.