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Finding the Fourth Proportional to 68,380.61, 102,570.98 and 18,460.68

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Solution

The fourth proportional to 68,380.61, 102,570.98 and 18,460.68 is: 27,691.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,380.61 : 102,570.98 = 18,460.68 : x
  2. Step 2: Convert to fraction form
    68,380.61/102,570.98 = 18,460.68/x
  3. Step 3: Cross multiply
    68,380.61x = 102,570.98 × 18,460.68
  4. Step 4: Simplify right side
    68,380.61x = 1,893,529,562.12
  5. Step 5: Solve for x
    x = 1,893,529,562.12/68,380.61
  6. Step 6: Final answer
    x = 27,691.03

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1.5x scale

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.