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Finding the Fourth Proportional to 43,900.16, 65,865.02 and 13,919.29

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Solution

The fourth proportional to 43,900.16, 65,865.02 and 13,919.29 is: 20,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,900.16 : 65,865.02 = 13,919.29 : x
  2. Step 2: Convert to fraction form
    43,900.16/65,865.02 = 13,919.29/x
  3. Step 3: Cross multiply
    43,900.16x = 65,865.02 × 13,919.29
  4. Step 4: Simplify right side
    43,900.16x = 916,794,079.98
  5. Step 5: Solve for x
    x = 916,794,079.98/43,900.16
  6. Step 6: Final answer
    x = 20,883.62

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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.