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Finding the Fourth Proportional to 68,020, 102,035.88 and 18,772

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Solution

The fourth proportional to 68,020, 102,035.88 and 18,772 is: 28,159.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,020 : 102,035.88 = 18,772 : x
  2. Step 2: Convert to fraction form
    68,020/102,035.88 = 18,772/x
  3. Step 3: Cross multiply
    68,020x = 102,035.88 × 18,772
  4. Step 4: Simplify right side
    68,020x = 1,915,417,539.36
  5. Step 5: Solve for x
    x = 1,915,417,539.36/68,020
  6. Step 6: Final answer
    x = 28,159.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.