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Finding the Fourth Proportional to 70,983.29, 106,489.62 and 28,863.37

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Solution

The fourth proportional to 70,983.29, 106,489.62 and 28,863.37 is: 43,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,983.29 : 106,489.62 = 28,863.37 : x
  2. Step 2: Convert to fraction form
    70,983.29/106,489.62 = 28,863.37/x
  3. Step 3: Cross multiply
    70,983.29x = 106,489.62 × 28,863.37
  4. Step 4: Simplify right side
    70,983.29x = 3,073,648,626.45
  5. Step 5: Solve for x
    x = 3,073,648,626.45/70,983.29
  6. Step 6: Final answer
    x = 43,301.02

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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.