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Finding the Fourth Proportional to 70,243.69, 105,357.66 and 17,653.27

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Solution

The fourth proportional to 70,243.69, 105,357.66 and 17,653.27 is: 26,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,243.69 : 105,357.66 = 17,653.27 : x
  2. Step 2: Convert to fraction form
    70,243.69/105,357.66 = 17,653.27/x
  3. Step 3: Cross multiply
    70,243.69x = 105,357.66 × 17,653.27
  4. Step 4: Simplify right side
    70,243.69x = 1,859,907,218.55
  5. Step 5: Solve for x
    x = 1,859,907,218.55/70,243.69
  6. Step 6: Final answer
    x = 26,477.93

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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.