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Finding the Fourth Proportional to 45,850, 68,786.56 and 13,018

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Solution

The fourth proportional to 45,850, 68,786.56 and 13,018 is: 19,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,850 : 68,786.56 = 13,018 : x
  2. Step 2: Convert to fraction form
    45,850/68,786.56 = 13,018/x
  3. Step 3: Cross multiply
    45,850x = 68,786.56 × 13,018
  4. Step 4: Simplify right side
    45,850x = 895,463,438.08
  5. Step 5: Solve for x
    x = 895,463,438.08/45,850
  6. Step 6: Final answer
    x = 19,530.28

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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.