Home / 82,601,971.92-114,107,286.60-66,191,112.72

Finding the Fourth Proportional to 82,601,971.92, 114,107,286.60 and 66,191,112.72

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Solution

The fourth proportional to 82,601,971.92, 114,107,286.60 and 66,191,112.72 is: 91,437,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,601,971.92 : 114,107,286.60 = 66,191,112.72 : x
  2. Step 2: Convert to fraction form
    82,601,971.92/114,107,286.60 = 66,191,112.72/x
  3. Step 3: Cross multiply
    82,601,971.92x = 114,107,286.60 × 66,191,112.72
  4. Step 4: Simplify right side
    82,601,971.92x = 7,552,888,269,513,945
  5. Step 5: Solve for x
    x = 7,552,888,269,513,945/82,601,971.92
  6. Step 6: Final answer
    x = 91,437,142.41

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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.