Home / 81,039.42-111,784.68-53,816.67

Finding the Fourth Proportional to 81,039.42, 111,784.68 and 53,816.67

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Solution

The fourth proportional to 81,039.42, 111,784.68 and 53,816.67 is: 74,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,039.42 : 111,784.68 = 53,816.67 : x
  2. Step 2: Convert to fraction form
    81,039.42/111,784.68 = 53,816.67/x
  3. Step 3: Cross multiply
    81,039.42x = 111,784.68 × 53,816.67
  4. Step 4: Simplify right side
    81,039.42x = 6,015,879,234.62
  5. Step 5: Solve for x
    x = 6,015,879,234.62/81,039.42
  6. Step 6: Final answer
    x = 74,233.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.