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Finding the Fourth Proportional to 69,338.10, 104,022.80 and 21,956.07

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Solution

The fourth proportional to 69,338.10, 104,022.80 and 21,956.07 is: 32,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,338.10 : 104,022.80 = 21,956.07 : x
  2. Step 2: Convert to fraction form
    69,338.10/104,022.80 = 21,956.07/x
  3. Step 3: Cross multiply
    69,338.10x = 104,022.80 × 21,956.07
  4. Step 4: Simplify right side
    69,338.10x = 2,283,931,413.17
  5. Step 5: Solve for x
    x = 2,283,931,413.17/69,338.10
  6. Step 6: Final answer
    x = 32,939.06

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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.