Home / 86,035.12-128,993.68-43,833.52

Finding the Fourth Proportional to 86,035.12, 128,993.68 and 43,833.52

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Solution

The fourth proportional to 86,035.12, 128,993.68 and 43,833.52 is: 65,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,035.12 : 128,993.68 = 43,833.52 : x
  2. Step 2: Convert to fraction form
    86,035.12/128,993.68 = 43,833.52/x
  3. Step 3: Cross multiply
    86,035.12x = 128,993.68 × 43,833.52
  4. Step 4: Simplify right side
    86,035.12x = 5,654,247,052.15
  5. Step 5: Solve for x
    x = 5,654,247,052.15/86,035.12
  6. Step 6: Final answer
    x = 65,720.22

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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.