Home / 81,043,736.09-121,614,019.79-74,450,091.75

Finding the Fourth Proportional to 81,043,736.09, 121,614,019.79 and 74,450,091.75

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Solution

The fourth proportional to 81,043,736.09, 121,614,019.79 and 74,450,091.75 is: 111,719,614.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,043,736.09 : 121,614,019.79 = 74,450,091.75 : x
  2. Step 2: Convert to fraction form
    81,043,736.09/121,614,019.79 = 74,450,091.75/x
  3. Step 3: Cross multiply
    81,043,736.09x = 121,614,019.79 × 74,450,091.75
  4. Step 4: Simplify right side
    81,043,736.09x = 9,054,174,930,657,620
  5. Step 5: Solve for x
    x = 9,054,174,930,657,620/81,043,736.09
  6. Step 6: Final answer
    x = 111,719,614.22

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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.