Home / 74,021.32-111,027.66-18,613

Finding the Fourth Proportional to 74,021.32, 111,027.66 and 18,613

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Solution

The fourth proportional to 74,021.32, 111,027.66 and 18,613 is: 27,918.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,021.32 : 111,027.66 = 18,613 : x
  2. Step 2: Convert to fraction form
    74,021.32/111,027.66 = 18,613/x
  3. Step 3: Cross multiply
    74,021.32x = 111,027.66 × 18,613
  4. Step 4: Simplify right side
    74,021.32x = 2,066,557,835.58
  5. Step 5: Solve for x
    x = 2,066,557,835.58/74,021.32
  6. Step 6: Final answer
    x = 27,918.41

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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.