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Finding the Fourth Proportional to 69,898.92, 104,851.85 and 19,986.36

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Solution

The fourth proportional to 69,898.92, 104,851.85 and 19,986.36 is: 29,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,898.92 : 104,851.85 = 19,986.36 : x
  2. Step 2: Convert to fraction form
    69,898.92/104,851.85 = 19,986.36/x
  3. Step 3: Cross multiply
    69,898.92x = 104,851.85 × 19,986.36
  4. Step 4: Simplify right side
    69,898.92x = 2,095,606,720.83
  5. Step 5: Solve for x
    x = 2,095,606,720.83/69,898.92
  6. Step 6: Final answer
    x = 29,980.53

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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.