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Finding the Fourth Proportional to 69,459.75, 104,189.54 and 16,869.15

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Solution

The fourth proportional to 69,459.75, 104,189.54 and 16,869.15 is: 25,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,459.75 : 104,189.54 = 16,869.15 : x
  2. Step 2: Convert to fraction form
    69,459.75/104,189.54 = 16,869.15/x
  3. Step 3: Cross multiply
    69,459.75x = 104,189.54 × 16,869.15
  4. Step 4: Simplify right side
    69,459.75x = 1,757,588,894.35
  5. Step 5: Solve for x
    x = 1,757,588,894.35/69,459.75
  6. Step 6: Final answer
    x = 25,303.70

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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.