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Finding the Fourth Proportional to 74,019.56, 111,028.31 and 17,859.20

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Solution

The fourth proportional to 74,019.56, 111,028.31 and 17,859.20 is: 26,788.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,019.56 : 111,028.31 = 17,859.20 : x
  2. Step 2: Convert to fraction form
    74,019.56/111,028.31 = 17,859.20/x
  3. Step 3: Cross multiply
    74,019.56x = 111,028.31 × 17,859.20
  4. Step 4: Simplify right side
    74,019.56x = 1,982,876,793.95
  5. Step 5: Solve for x
    x = 1,982,876,793.95/74,019.56
  6. Step 6: Final answer
    x = 26,788.55

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1.5x scale

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.