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Finding the Fourth Proportional to 30,863.60, 46,288.18 and 8,679.10

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Solution

The fourth proportional to 30,863.60, 46,288.18 and 8,679.10 is: 13,016.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,863.60 : 46,288.18 = 8,679.10 : x
  2. Step 2: Convert to fraction form
    30,863.60/46,288.18 = 8,679.10/x
  3. Step 3: Cross multiply
    30,863.60x = 46,288.18 × 8,679.10
  4. Step 4: Simplify right side
    30,863.60x = 401,739,743.04
  5. Step 5: Solve for x
    x = 401,739,743.04/30,863.60
  6. Step 6: Final answer
    x = 13,016.62

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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.