Home / 85,733.58-128,600.39-35,786.43

Finding the Fourth Proportional to 85,733.58, 128,600.39 and 35,786.43

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Solution

The fourth proportional to 85,733.58, 128,600.39 and 35,786.43 is: 53,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,733.58 : 128,600.39 = 35,786.43 : x
  2. Step 2: Convert to fraction form
    85,733.58/128,600.39 = 35,786.43/x
  3. Step 3: Cross multiply
    85,733.58x = 128,600.39 × 35,786.43
  4. Step 4: Simplify right side
    85,733.58x = 4,602,149,176.21
  5. Step 5: Solve for x
    x = 4,602,149,176.21/85,733.58
  6. Step 6: Final answer
    x = 53,679.66

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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.