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Finding the Fourth Proportional to 69,309.80, 103,964.70 and 67,927.40

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Solution

The fourth proportional to 69,309.80, 103,964.70 and 67,927.40 is: 101,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,309.80 : 103,964.70 = 67,927.40 : x
  2. Step 2: Convert to fraction form
    69,309.80/103,964.70 = 67,927.40/x
  3. Step 3: Cross multiply
    69,309.80x = 103,964.70 × 67,927.40
  4. Step 4: Simplify right side
    69,309.80x = 7,062,051,762.78
  5. Step 5: Solve for x
    x = 7,062,051,762.78/69,309.80
  6. Step 6: Final answer
    x = 101,891.10

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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.