Home / 78,517,986.67-108,284,283.88-49,151,996.33

Finding the Fourth Proportional to 78,517,986.67, 108,284,283.88 and 49,151,996.33

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Solution

The fourth proportional to 78,517,986.67, 108,284,283.88 and 49,151,996.33 is: 67,785,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,517,986.67 : 108,284,283.88 = 49,151,996.33 : x
  2. Step 2: Convert to fraction form
    78,517,986.67/108,284,283.88 = 49,151,996.33/x
  3. Step 3: Cross multiply
    78,517,986.67x = 108,284,283.88 × 49,151,996.33
  4. Step 4: Simplify right side
    78,517,986.67x = 5,322,388,723,202,137
  5. Step 5: Solve for x
    x = 5,322,388,723,202,137/78,517,986.67
  6. Step 6: Final answer
    x = 67,785,598.55

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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.