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Finding the Fourth Proportional to 43,179, 64,770.66 and 40,906.68

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Solution

The fourth proportional to 43,179, 64,770.66 and 40,906.68 is: 61,362.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,179 : 64,770.66 = 40,906.68 : x
  2. Step 2: Convert to fraction form
    43,179/64,770.66 = 40,906.68/x
  3. Step 3: Cross multiply
    43,179x = 64,770.66 × 40,906.68
  4. Step 4: Simplify right side
    43,179x = 2,649,552,662.01
  5. Step 5: Solve for x
    x = 2,649,552,662.01/43,179
  6. Step 6: Final answer
    x = 61,362.07

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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.