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Finding the Fourth Proportional to 69,833.69, 104,751.51 and 19,913.79

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Solution

The fourth proportional to 69,833.69, 104,751.51 and 19,913.79 is: 29,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,833.69 : 104,751.51 = 19,913.79 : x
  2. Step 2: Convert to fraction form
    69,833.69/104,751.51 = 19,913.79/x
  3. Step 3: Cross multiply
    69,833.69x = 104,751.51 × 19,913.79
  4. Step 4: Simplify right side
    69,833.69x = 2,085,999,572.32
  5. Step 5: Solve for x
    x = 2,085,999,572.32/69,833.69
  6. Step 6: Final answer
    x = 29,870.96

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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.