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Finding the Fourth Proportional to 70,552.12, 105,816 and 19,954.68

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Solution

The fourth proportional to 70,552.12, 105,816 and 19,954.68 is: 29,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,552.12 : 105,816 = 19,954.68 : x
  2. Step 2: Convert to fraction form
    70,552.12/105,816 = 19,954.68/x
  3. Step 3: Cross multiply
    70,552.12x = 105,816 × 19,954.68
  4. Step 4: Simplify right side
    70,552.12x = 2,111,524,418.88
  5. Step 5: Solve for x
    x = 2,111,524,418.88/70,552.12
  6. Step 6: Final answer
    x = 29,928.58

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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.