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Finding the Fourth Proportional to 43,900.03, 65,864.83 and 13,919.16

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Solution

The fourth proportional to 43,900.03, 65,864.83 and 13,919.16 is: 20,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,900.03 : 65,864.83 = 13,919.16 : x
  2. Step 2: Convert to fraction form
    43,900.03/65,864.83 = 13,919.16/x
  3. Step 3: Cross multiply
    43,900.03x = 65,864.83 × 13,919.16
  4. Step 4: Simplify right side
    43,900.03x = 916,783,107.14
  5. Step 5: Solve for x
    x = 916,783,107.14/43,900.03
  6. Step 6: Final answer
    x = 20,883.43

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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.