Home / 79,121.51-109,187.82-43,313.71

Finding the Fourth Proportional to 79,121.51, 109,187.82 and 43,313.71

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Solution

The fourth proportional to 79,121.51, 109,187.82 and 43,313.71 is: 59,772.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.51 : 109,187.82 = 43,313.71 : x
  2. Step 2: Convert to fraction form
    79,121.51/109,187.82 = 43,313.71/x
  3. Step 3: Cross multiply
    79,121.51x = 109,187.82 × 43,313.71
  4. Step 4: Simplify right side
    79,121.51x = 4,729,329,571.01
  5. Step 5: Solve for x
    x = 4,729,329,571.01/79,121.51
  6. Step 6: Final answer
    x = 59,772.99

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1.5x scale

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.