Home / 85,378.05-128,083.68-32,783.67

Finding the Fourth Proportional to 85,378.05, 128,083.68 and 32,783.67

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Solution

The fourth proportional to 85,378.05, 128,083.68 and 32,783.67 is: 49,181.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,378.05 : 128,083.68 = 32,783.67 : x
  2. Step 2: Convert to fraction form
    85,378.05/128,083.68 = 32,783.67/x
  3. Step 3: Cross multiply
    85,378.05x = 128,083.68 × 32,783.67
  4. Step 4: Simplify right side
    85,378.05x = 4,199,053,097.51
  5. Step 5: Solve for x
    x = 4,199,053,097.51/85,378.05
  6. Step 6: Final answer
    x = 49,181.88

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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.