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Finding the Fourth Proportional to 69,735.70, 104,587.80 and 19,814.68

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Solution

The fourth proportional to 69,735.70, 104,587.80 and 19,814.68 is: 29,717.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,735.70 : 104,587.80 = 19,814.68 : x
  2. Step 2: Convert to fraction form
    69,735.70/104,587.80 = 19,814.68/x
  3. Step 3: Cross multiply
    69,735.70x = 104,587.80 × 19,814.68
  4. Step 4: Simplify right side
    69,735.70x = 2,072,373,788.90
  5. Step 5: Solve for x
    x = 2,072,373,788.90/69,735.70
  6. Step 6: Final answer
    x = 29,717.54

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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.