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Finding the Fourth Proportional to 45,858.36, 68,780.45 and 18,843.44

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Solution

The fourth proportional to 45,858.36, 68,780.45 and 18,843.44 is: 28,262.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.36 : 68,780.45 = 18,843.44 : x
  2. Step 2: Convert to fraction form
    45,858.36/68,780.45 = 18,843.44/x
  3. Step 3: Cross multiply
    45,858.36x = 68,780.45 × 18,843.44
  4. Step 4: Simplify right side
    45,858.36x = 1,296,060,501.81
  5. Step 5: Solve for x
    x = 1,296,060,501.81/45,858.36
  6. Step 6: Final answer
    x = 28,262.25

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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.