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Finding the Fourth Proportional to 68,545, 102,770.65 and 36,528.90

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Solution

The fourth proportional to 68,545, 102,770.65 and 36,528.90 is: 54,768.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,545 : 102,770.65 = 36,528.90 : x
  2. Step 2: Convert to fraction form
    68,545/102,770.65 = 36,528.90/x
  3. Step 3: Cross multiply
    68,545x = 102,770.65 × 36,528.90
  4. Step 4: Simplify right side
    68,545x = 3,754,098,796.79
  5. Step 5: Solve for x
    x = 3,754,098,796.79/68,545
  6. Step 6: Final answer
    x = 54,768.38

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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.