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Finding the Fourth Proportional to 36,459, 54,698.22 and 17,991

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Solution

The fourth proportional to 36,459, 54,698.22 and 17,991 is: 26,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,459 : 54,698.22 = 17,991 : x
  2. Step 2: Convert to fraction form
    36,459/54,698.22 = 17,991/x
  3. Step 3: Cross multiply
    36,459x = 54,698.22 × 17,991
  4. Step 4: Simplify right side
    36,459x = 984,075,676.02
  5. Step 5: Solve for x
    x = 984,075,676.02/36,459
  6. Step 6: Final answer
    x = 26,991.30

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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.