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Finding the Fourth Proportional to 68,953,744.80, 103,422,322.80 and 28,560,016.80

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Solution

The fourth proportional to 68,953,744.80, 103,422,322.80 and 28,560,016.80 is: 42,836,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,953,744.80 : 103,422,322.80 = 28,560,016.80 : x
  2. Step 2: Convert to fraction form
    68,953,744.80/103,422,322.80 = 28,560,016.80/x
  3. Step 3: Cross multiply
    68,953,744.80x = 103,422,322.80 × 28,560,016.80
  4. Step 4: Simplify right side
    68,953,744.80x = 2,953,743,276,663,023
  5. Step 5: Solve for x
    x = 2,953,743,276,663,023/68,953,744.80
  6. Step 6: Final answer
    x = 42,836,589.73

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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.