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Finding the Fourth Proportional to 69,990.59, 104,986.28 and 17,400.08

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Solution

The fourth proportional to 69,990.59, 104,986.28 and 17,400.08 is: 26,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,990.59 : 104,986.28 = 17,400.08 : x
  2. Step 2: Convert to fraction form
    69,990.59/104,986.28 = 17,400.08/x
  3. Step 3: Cross multiply
    69,990.59x = 104,986.28 × 17,400.08
  4. Step 4: Simplify right side
    69,990.59x = 1,826,769,058.97
  5. Step 5: Solve for x
    x = 1,826,769,058.97/69,990.59
  6. Step 6: Final answer
    x = 26,100.21

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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.