Home / 81,285.08-121,949.54-33,884.42

Finding the Fourth Proportional to 81,285.08, 121,949.54 and 33,884.42

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Solution

The fourth proportional to 81,285.08, 121,949.54 and 33,884.42 is: 50,835.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.08 : 121,949.54 = 33,884.42 : x
  2. Step 2: Convert to fraction form
    81,285.08/121,949.54 = 33,884.42/x
  3. Step 3: Cross multiply
    81,285.08x = 121,949.54 × 33,884.42
  4. Step 4: Simplify right side
    81,285.08x = 4,132,189,262.74
  5. Step 5: Solve for x
    x = 4,132,189,262.74/81,285.08
  6. Step 6: Final answer
    x = 50,835.77

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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.