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Finding the Fourth Proportional to 69,913.80, 104,870.70 and 41,920.20

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Solution

The fourth proportional to 69,913.80, 104,870.70 and 41,920.20 is: 62,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,913.80 : 104,870.70 = 41,920.20 : x
  2. Step 2: Convert to fraction form
    69,913.80/104,870.70 = 41,920.20/x
  3. Step 3: Cross multiply
    69,913.80x = 104,870.70 × 41,920.20
  4. Step 4: Simplify right side
    69,913.80x = 4,396,200,718.14
  5. Step 5: Solve for x
    x = 4,396,200,718.14/69,913.80
  6. Step 6: Final answer
    x = 62,880.30

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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.