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Finding the Fourth Proportional to 74,531.71, 111,794.99 and 21,224.03

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Solution

The fourth proportional to 74,531.71, 111,794.99 and 21,224.03 is: 31,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,531.71 : 111,794.99 = 21,224.03 : x
  2. Step 2: Convert to fraction form
    74,531.71/111,794.99 = 21,224.03/x
  3. Step 3: Cross multiply
    74,531.71x = 111,794.99 × 21,224.03
  4. Step 4: Simplify right side
    74,531.71x = 2,372,739,556.51
  5. Step 5: Solve for x
    x = 2,372,739,556.51/74,531.71
  6. Step 6: Final answer
    x = 31,835.30

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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.