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Finding the Fourth Proportional to 69,480.67, 104,220.25 and 16,890.21

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Solution

The fourth proportional to 69,480.67, 104,220.25 and 16,890.21 is: 25,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,480.67 : 104,220.25 = 16,890.21 : x
  2. Step 2: Convert to fraction form
    69,480.67/104,220.25 = 16,890.21/x
  3. Step 3: Cross multiply
    69,480.67x = 104,220.25 × 16,890.21
  4. Step 4: Simplify right side
    69,480.67x = 1,760,301,908.75
  5. Step 5: Solve for x
    x = 1,760,301,908.75/69,480.67
  6. Step 6: Final answer
    x = 25,335.13

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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.