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Finding the Fourth Proportional to 68,530.82, 102,795.15 and 21,783.02

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Solution

The fourth proportional to 68,530.82, 102,795.15 and 21,783.02 is: 32,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,530.82 : 102,795.15 = 21,783.02 : x
  2. Step 2: Convert to fraction form
    68,530.82/102,795.15 = 21,783.02/x
  3. Step 3: Cross multiply
    68,530.82x = 102,795.15 × 21,783.02
  4. Step 4: Simplify right side
    68,530.82x = 2,239,188,808.35
  5. Step 5: Solve for x
    x = 2,239,188,808.35/68,530.82
  6. Step 6: Final answer
    x = 32,674.19

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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.