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Finding the Fourth Proportional to 68,063.61, 102,095.31 and 18,143.94

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Solution

The fourth proportional to 68,063.61, 102,095.31 and 18,143.94 is: 27,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,063.61 : 102,095.31 = 18,143.94 : x
  2. Step 2: Convert to fraction form
    68,063.61/102,095.31 = 18,143.94/x
  3. Step 3: Cross multiply
    68,063.61x = 102,095.31 × 18,143.94
  4. Step 4: Simplify right side
    68,063.61x = 1,852,411,178.92
  5. Step 5: Solve for x
    x = 1,852,411,178.92/68,063.61
  6. Step 6: Final answer
    x = 27,215.88

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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.