Home / 74,109.85-111,167.85-21,519.33

Finding the Fourth Proportional to 74,109.85, 111,167.85 and 21,519.33

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Solution

The fourth proportional to 74,109.85, 111,167.85 and 21,519.33 is: 32,279.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,109.85 : 111,167.85 = 21,519.33 : x
  2. Step 2: Convert to fraction form
    74,109.85/111,167.85 = 21,519.33/x
  3. Step 3: Cross multiply
    74,109.85x = 111,167.85 × 21,519.33
  4. Step 4: Simplify right side
    74,109.85x = 2,392,258,097.52
  5. Step 5: Solve for x
    x = 2,392,258,097.52/74,109.85
  6. Step 6: Final answer
    x = 32,279.89

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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.