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Finding the Fourth Proportional to 69,366.51, 104,062.74 and 21,979.66

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Solution

The fourth proportional to 69,366.51, 104,062.74 and 21,979.66 is: 32,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,366.51 : 104,062.74 = 21,979.66 : x
  2. Step 2: Convert to fraction form
    69,366.51/104,062.74 = 21,979.66/x
  3. Step 3: Cross multiply
    69,366.51x = 104,062.74 × 21,979.66
  4. Step 4: Simplify right side
    69,366.51x = 2,287,263,643.87
  5. Step 5: Solve for x
    x = 2,287,263,643.87/69,366.51
  6. Step 6: Final answer
    x = 32,973.60

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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.