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Finding the Fourth Proportional to 30,581.40, 45,861.30 and 10,860.60

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Solution

The fourth proportional to 30,581.40, 45,861.30 and 10,860.60 is: 16,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.40 : 45,861.30 = 10,860.60 : x
  2. Step 2: Convert to fraction form
    30,581.40/45,861.30 = 10,860.60/x
  3. Step 3: Cross multiply
    30,581.40x = 45,861.30 × 10,860.60
  4. Step 4: Simplify right side
    30,581.40x = 498,081,234.78
  5. Step 5: Solve for x
    x = 498,081,234.78/30,581.40
  6. Step 6: Final answer
    x = 16,287.06

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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.