Home / 85,680.38-128,603.60-41,338.25

Finding the Fourth Proportional to 85,680.38, 128,603.60 and 41,338.25

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Solution

The fourth proportional to 85,680.38, 128,603.60 and 41,338.25 is: 62,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.38 : 128,603.60 = 41,338.25 : x
  2. Step 2: Convert to fraction form
    85,680.38/128,603.60 = 41,338.25/x
  3. Step 3: Cross multiply
    85,680.38x = 128,603.60 × 41,338.25
  4. Step 4: Simplify right side
    85,680.38x = 5,316,247,555.27
  5. Step 5: Solve for x
    x = 5,316,247,555.27/85,680.38
  6. Step 6: Final answer
    x = 62,047.43

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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.