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Finding the Fourth Proportional to 43,647.55, 65,470.03 and 12,059.51

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Solution

The fourth proportional to 43,647.55, 65,470.03 and 12,059.51 is: 18,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,647.55 : 65,470.03 = 12,059.51 : x
  2. Step 2: Convert to fraction form
    43,647.55/65,470.03 = 12,059.51/x
  3. Step 3: Cross multiply
    43,647.55x = 65,470.03 × 12,059.51
  4. Step 4: Simplify right side
    43,647.55x = 789,536,481.49
  5. Step 5: Solve for x
    x = 789,536,481.49/43,647.55
  6. Step 6: Final answer
    x = 18,088.91

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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.