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Finding the Fourth Proportional to 69,406.10, 104,108.79 and 16,815.59

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Solution

The fourth proportional to 69,406.10, 104,108.79 and 16,815.59 is: 25,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,406.10 : 104,108.79 = 16,815.59 : x
  2. Step 2: Convert to fraction form
    69,406.10/104,108.79 = 16,815.59/x
  3. Step 3: Cross multiply
    69,406.10x = 104,108.79 × 16,815.59
  4. Step 4: Simplify right side
    69,406.10x = 1,750,650,207.49
  5. Step 5: Solve for x
    x = 1,750,650,207.49/69,406.10
  6. Step 6: Final answer
    x = 25,223.29

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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.