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Finding the Fourth Proportional to 45,765, 68,647.91 and 18,063

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Solution

The fourth proportional to 45,765, 68,647.91 and 18,063 is: 27,094.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,765 : 68,647.91 = 18,063 : x
  2. Step 2: Convert to fraction form
    45,765/68,647.91 = 18,063/x
  3. Step 3: Cross multiply
    45,765x = 68,647.91 × 18,063
  4. Step 4: Simplify right side
    45,765x = 1,239,987,108.02
  5. Step 5: Solve for x
    x = 1,239,987,108.02/45,765
  6. Step 6: Final answer
    x = 27,094.66

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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.