Home / 74,768.36-103,189.61-42,936.57

Finding the Fourth Proportional to 74,768.36, 103,189.61 and 42,936.57

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Solution

The fourth proportional to 74,768.36, 103,189.61 and 42,936.57 is: 59,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,768.36 : 103,189.61 = 42,936.57 : x
  2. Step 2: Convert to fraction form
    74,768.36/103,189.61 = 42,936.57/x
  3. Step 3: Cross multiply
    74,768.36x = 103,189.61 × 42,936.57
  4. Step 4: Simplify right side
    74,768.36x = 4,430,608,020.38
  5. Step 5: Solve for x
    x = 4,430,608,020.38/74,768.36
  6. Step 6: Final answer
    x = 59,257.80

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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.