Home / 74,030.78-111,019.62-21,429.38

Finding the Fourth Proportional to 74,030.78, 111,019.62 and 21,429.38

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Solution

The fourth proportional to 74,030.78, 111,019.62 and 21,429.38 is: 32,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,030.78 : 111,019.62 = 21,429.38 : x
  2. Step 2: Convert to fraction form
    74,030.78/111,019.62 = 21,429.38/x
  3. Step 3: Cross multiply
    74,030.78x = 111,019.62 × 21,429.38
  4. Step 4: Simplify right side
    74,030.78x = 2,379,081,624.44
  5. Step 5: Solve for x
    x = 2,379,081,624.44/74,030.78
  6. Step 6: Final answer
    x = 32,136.38

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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.