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Finding the Fourth Proportional to 81,052.88, 111,865.94 and 47,518.88

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Solution

The fourth proportional to 81,052.88, 111,865.94 and 47,518.88 is: 65,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.88 : 111,865.94 = 47,518.88 : x
  2. Step 2: Convert to fraction form
    81,052.88/111,865.94 = 47,518.88/x
  3. Step 3: Cross multiply
    81,052.88x = 111,865.94 × 47,518.88
  4. Step 4: Simplify right side
    81,052.88x = 5,315,743,382.02
  5. Step 5: Solve for x
    x = 5,315,743,382.02/81,052.88
  6. Step 6: Final answer
    x = 65,583.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.