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Finding the Fourth Proportional to 69,989.09, 104,984.02 and 17,398.57

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Solution

The fourth proportional to 69,989.09, 104,984.02 and 17,398.57 is: 26,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,989.09 : 104,984.02 = 17,398.57 : x
  2. Step 2: Convert to fraction form
    69,989.09/104,984.02 = 17,398.57/x
  3. Step 3: Cross multiply
    69,989.09x = 104,984.02 × 17,398.57
  4. Step 4: Simplify right side
    69,989.09x = 1,826,572,121.19
  5. Step 5: Solve for x
    x = 1,826,572,121.19/69,989.09
  6. Step 6: Final answer
    x = 26,097.96

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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.