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Finding the Fourth Proportional to 44,043.75, 66,065.63 and 12,879

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Solution

The fourth proportional to 44,043.75, 66,065.63 and 12,879 is: 19,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,043.75 : 66,065.63 = 12,879 : x
  2. Step 2: Convert to fraction form
    44,043.75/66,065.63 = 12,879/x
  3. Step 3: Cross multiply
    44,043.75x = 66,065.63 × 12,879
  4. Step 4: Simplify right side
    44,043.75x = 850,859,184.38
  5. Step 5: Solve for x
    x = 850,859,184.38/44,043.75
  6. Step 6: Final answer
    x = 19,318.50

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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.