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Finding the Fourth Proportional to 68,932.80, 103,406.40 and 19,012.92

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Solution

The fourth proportional to 68,932.80, 103,406.40 and 19,012.92 is: 28,521.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,932.80 : 103,406.40 = 19,012.92 : x
  2. Step 2: Convert to fraction form
    68,932.80/103,406.40 = 19,012.92/x
  3. Step 3: Cross multiply
    68,932.80x = 103,406.40 × 19,012.92
  4. Step 4: Simplify right side
    68,932.80x = 1,966,057,610.69
  5. Step 5: Solve for x
    x = 1,966,057,610.69/68,932.80
  6. Step 6: Final answer
    x = 28,521.37

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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.