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Finding the Fourth Proportional to 69,580.96, 104,371.08 and 16,990.72

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Solution

The fourth proportional to 69,580.96, 104,371.08 and 16,990.72 is: 25,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,580.96 : 104,371.08 = 16,990.72 : x
  2. Step 2: Convert to fraction form
    69,580.96/104,371.08 = 16,990.72/x
  3. Step 3: Cross multiply
    69,580.96x = 104,371.08 × 16,990.72
  4. Step 4: Simplify right side
    69,580.96x = 1,773,339,796.38
  5. Step 5: Solve for x
    x = 1,773,339,796.38/69,580.96
  6. Step 6: Final answer
    x = 25,485.99

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1.5x scale

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.