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Finding the Fourth Proportional to 68,038.52, 102,063.54 and 18,790.52

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Solution

The fourth proportional to 68,038.52, 102,063.54 and 18,790.52 is: 28,187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,038.52 : 102,063.54 = 18,790.52 : x
  2. Step 2: Convert to fraction form
    68,038.52/102,063.54 = 18,790.52/x
  3. Step 3: Cross multiply
    68,038.52x = 102,063.54 × 18,790.52
  4. Step 4: Simplify right side
    68,038.52x = 1,917,826,989.64
  5. Step 5: Solve for x
    x = 1,917,826,989.64/68,038.52
  6. Step 6: Final answer
    x = 28,187.37

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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.