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Finding the Fourth Proportional to 68,595.34, 102,899.16 and 18,675.70

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Solution

The fourth proportional to 68,595.34, 102,899.16 and 18,675.70 is: 28,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,595.34 : 102,899.16 = 18,675.70 : x
  2. Step 2: Convert to fraction form
    68,595.34/102,899.16 = 18,675.70/x
  3. Step 3: Cross multiply
    68,595.34x = 102,899.16 × 18,675.70
  4. Step 4: Simplify right side
    68,595.34x = 1,921,713,842.41
  5. Step 5: Solve for x
    x = 1,921,713,842.41/68,595.34
  6. Step 6: Final answer
    x = 28,015.22

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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.