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Finding the Fourth Proportional to 70,324.10, 105,486.59 and 28,771.10

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Solution

The fourth proportional to 70,324.10, 105,486.59 and 28,771.10 is: 43,156.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,324.10 : 105,486.59 = 28,771.10 : x
  2. Step 2: Convert to fraction form
    70,324.10/105,486.59 = 28,771.10/x
  3. Step 3: Cross multiply
    70,324.10x = 105,486.59 × 28,771.10
  4. Step 4: Simplify right side
    70,324.10x = 3,034,965,229.55
  5. Step 5: Solve for x
    x = 3,034,965,229.55/70,324.10
  6. Step 6: Final answer
    x = 43,156.83

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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.