Home / 85,727.66-128,544.51-26,546.90

Finding the Fourth Proportional to 85,727.66, 128,544.51 and 26,546.90

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Solution

The fourth proportional to 85,727.66, 128,544.51 and 26,546.90 is: 39,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,727.66 : 128,544.51 = 26,546.90 : x
  2. Step 2: Convert to fraction form
    85,727.66/128,544.51 = 26,546.90/x
  3. Step 3: Cross multiply
    85,727.66x = 128,544.51 × 26,546.90
  4. Step 4: Simplify right side
    85,727.66x = 3,412,458,252.52
  5. Step 5: Solve for x
    x = 3,412,458,252.52/85,727.66
  6. Step 6: Final answer
    x = 39,805.80

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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.