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Finding the Fourth Proportional to 69,898.58, 104,851.33 and 19,986.02

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Solution

The fourth proportional to 69,898.58, 104,851.33 and 19,986.02 is: 29,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,898.58 : 104,851.33 = 19,986.02 : x
  2. Step 2: Convert to fraction form
    69,898.58/104,851.33 = 19,986.02/x
  3. Step 3: Cross multiply
    69,898.58x = 104,851.33 × 19,986.02
  4. Step 4: Simplify right side
    69,898.58x = 2,095,560,778.41
  5. Step 5: Solve for x
    x = 2,095,560,778.41/69,898.58
  6. Step 6: Final answer
    x = 29,980.02

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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.