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Finding the Fourth Proportional to 68,582.80, 102,809.40 and 40,524.40

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Solution

The fourth proportional to 68,582.80, 102,809.40 and 40,524.40 is: 60,748.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,582.80 : 102,809.40 = 40,524.40 : x
  2. Step 2: Convert to fraction form
    68,582.80/102,809.40 = 40,524.40/x
  3. Step 3: Cross multiply
    68,582.80x = 102,809.40 × 40,524.40
  4. Step 4: Simplify right side
    68,582.80x = 4,166,289,249.36
  5. Step 5: Solve for x
    x = 4,166,289,249.36/68,582.80
  6. Step 6: Final answer
    x = 60,748.31

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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.