Home / 79,980.13-119,877.94-30,028.37

Finding the Fourth Proportional to 79,980.13, 119,877.94 and 30,028.37

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Solution

The fourth proportional to 79,980.13, 119,877.94 and 30,028.37 is: 45,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980.13 : 119,877.94 = 30,028.37 : x
  2. Step 2: Convert to fraction form
    79,980.13/119,877.94 = 30,028.37/x
  3. Step 3: Cross multiply
    79,980.13x = 119,877.94 × 30,028.37
  4. Step 4: Simplify right side
    79,980.13x = 3,599,738,987.02
  5. Step 5: Solve for x
    x = 3,599,738,987.02/79,980.13
  6. Step 6: Final answer
    x = 45,007.91

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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.