Home / 79,015.27-109,129.09-73,036.56

Finding the Fourth Proportional to 79,015.27, 109,129.09 and 73,036.56

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Solution

The fourth proportional to 79,015.27, 109,129.09 and 73,036.56 is: 100,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,015.27 : 109,129.09 = 73,036.56 : x
  2. Step 2: Convert to fraction form
    79,015.27/109,129.09 = 73,036.56/x
  3. Step 3: Cross multiply
    79,015.27x = 109,129.09 × 73,036.56
  4. Step 4: Simplify right side
    79,015.27x = 7,970,412,418.70
  5. Step 5: Solve for x
    x = 7,970,412,418.70/79,015.27
  6. Step 6: Final answer
    x = 100,871.81

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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.