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Finding the Fourth Proportional to 68,018, 102,032.88 and 18,770

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Solution

The fourth proportional to 68,018, 102,032.88 and 18,770 is: 28,156.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,018 : 102,032.88 = 18,770 : x
  2. Step 2: Convert to fraction form
    68,018/102,032.88 = 18,770/x
  3. Step 3: Cross multiply
    68,018x = 102,032.88 × 18,770
  4. Step 4: Simplify right side
    68,018x = 1,915,157,157.60
  5. Step 5: Solve for x
    x = 1,915,157,157.60/68,018
  6. Step 6: Final answer
    x = 28,156.62

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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.