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Finding the Fourth Proportional to 74,415.34, 111,623.88 and 21,825.88

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Solution

The fourth proportional to 74,415.34, 111,623.88 and 21,825.88 is: 32,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.34 : 111,623.88 = 21,825.88 : x
  2. Step 2: Convert to fraction form
    74,415.34/111,623.88 = 21,825.88/x
  3. Step 3: Cross multiply
    74,415.34x = 111,623.88 × 21,825.88
  4. Step 4: Simplify right side
    74,415.34x = 2,436,289,410.01
  5. Step 5: Solve for x
    x = 2,436,289,410.01/74,415.34
  6. Step 6: Final answer
    x = 32,739.08

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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.