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Finding the Fourth Proportional to 69,813.26, 103,930.23 and 69,398.07

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Solution

The fourth proportional to 69,813.26, 103,930.23 and 69,398.07 is: 103,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,813.26 : 103,930.23 = 69,398.07 : x
  2. Step 2: Convert to fraction form
    69,813.26/103,930.23 = 69,398.07/x
  3. Step 3: Cross multiply
    69,813.26x = 103,930.23 × 69,398.07
  4. Step 4: Simplify right side
    69,813.26x = 7,212,556,857.00
  5. Step 5: Solve for x
    x = 7,212,556,857.00/69,813.26
  6. Step 6: Final answer
    x = 103,312.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.