Home / 66,190.65-91,345.32-38,961.81

Finding the Fourth Proportional to 66,190.65, 91,345.32 and 38,961.81

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Solution

The fourth proportional to 66,190.65, 91,345.32 and 38,961.81 is: 53,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.65 : 91,345.32 = 38,961.81 : x
  2. Step 2: Convert to fraction form
    66,190.65/91,345.32 = 38,961.81/x
  3. Step 3: Cross multiply
    66,190.65x = 91,345.32 × 38,961.81
  4. Step 4: Simplify right side
    66,190.65x = 3,558,979,002.23
  5. Step 5: Solve for x
    x = 3,558,979,002.23/66,190.65
  6. Step 6: Final answer
    x = 53,768.61

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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.