Home / 74,512.89-111,769.32-19,108.89

Finding the Fourth Proportional to 74,512.89, 111,769.32 and 19,108.89

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Solution

The fourth proportional to 74,512.89, 111,769.32 and 19,108.89 is: 28,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,512.89 : 111,769.32 = 19,108.89 : x
  2. Step 2: Convert to fraction form
    74,512.89/111,769.32 = 19,108.89/x
  3. Step 3: Cross multiply
    74,512.89x = 111,769.32 × 19,108.89
  4. Step 4: Simplify right side
    74,512.89x = 2,135,787,641.25
  5. Step 5: Solve for x
    x = 2,135,787,641.25/74,512.89
  6. Step 6: Final answer
    x = 28,663.33

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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.