Home / 86,012.97-128,968.35-32,708.85

Finding the Fourth Proportional to 86,012.97, 128,968.35 and 32,708.85

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Solution

The fourth proportional to 86,012.97, 128,968.35 and 32,708.85 is: 49,043.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,012.97 : 128,968.35 = 32,708.85 : x
  2. Step 2: Convert to fraction form
    86,012.97/128,968.35 = 32,708.85/x
  3. Step 3: Cross multiply
    86,012.97x = 128,968.35 × 32,708.85
  4. Step 4: Simplify right side
    86,012.97x = 4,218,406,414.90
  5. Step 5: Solve for x
    x = 4,218,406,414.90/86,012.97
  6. Step 6: Final answer
    x = 49,043.84

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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.