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Finding the Fourth Proportional to 67,947.80, 101,880.30 and 30,500.60

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Solution

The fourth proportional to 67,947.80, 101,880.30 and 30,500.60 is: 45,732.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,947.80 : 101,880.30 = 30,500.60 : x
  2. Step 2: Convert to fraction form
    67,947.80/101,880.30 = 30,500.60/x
  3. Step 3: Cross multiply
    67,947.80x = 101,880.30 × 30,500.60
  4. Step 4: Simplify right side
    67,947.80x = 3,107,410,278.18
  5. Step 5: Solve for x
    x = 3,107,410,278.18/67,947.80
  6. Step 6: Final answer
    x = 45,732.32

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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.