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Finding the Fourth Proportional to 77,228.78, 115,860.15 and 43,964.42

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Solution

The fourth proportional to 77,228.78, 115,860.15 and 43,964.42 is: 65,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,228.78 : 115,860.15 = 43,964.42 : x
  2. Step 2: Convert to fraction form
    77,228.78/115,860.15 = 43,964.42/x
  3. Step 3: Cross multiply
    77,228.78x = 115,860.15 × 43,964.42
  4. Step 4: Simplify right side
    77,228.78x = 5,093,724,295.86
  5. Step 5: Solve for x
    x = 5,093,724,295.86/77,228.78
  6. Step 6: Final answer
    x = 65,956.30

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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.