Home / 74,308.83-111,272.91-40,991.87

Finding the Fourth Proportional to 74,308.83, 111,272.91 and 40,991.87

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Solution

The fourth proportional to 74,308.83, 111,272.91 and 40,991.87 is: 61,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,308.83 : 111,272.91 = 40,991.87 : x
  2. Step 2: Convert to fraction form
    74,308.83/111,272.91 = 40,991.87/x
  3. Step 3: Cross multiply
    74,308.83x = 111,272.91 × 40,991.87
  4. Step 4: Simplify right side
    74,308.83x = 4,561,284,104.88
  5. Step 5: Solve for x
    x = 4,561,284,104.88/74,308.83
  6. Step 6: Final answer
    x = 61,382.80

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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.