Home / 66,843.19-92,243.60-39,986.83

Finding the Fourth Proportional to 66,843.19, 92,243.60 and 39,986.83

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Solution

The fourth proportional to 66,843.19, 92,243.60 and 39,986.83 is: 55,181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,843.19 : 92,243.60 = 39,986.83 : x
  2. Step 2: Convert to fraction form
    66,843.19/92,243.60 = 39,986.83/x
  3. Step 3: Cross multiply
    66,843.19x = 92,243.60 × 39,986.83
  4. Step 4: Simplify right side
    66,843.19x = 3,688,529,151.79
  5. Step 5: Solve for x
    x = 3,688,529,151.79/66,843.19
  6. Step 6: Final answer
    x = 55,181.82

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.