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Finding the Fourth Proportional to 77,812.74, 107,369.73 and 43,819.44

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Solution

The fourth proportional to 77,812.74, 107,369.73 and 43,819.44 is: 60,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.74 : 107,369.73 = 43,819.44 : x
  2. Step 2: Convert to fraction form
    77,812.74/107,369.73 = 43,819.44/x
  3. Step 3: Cross multiply
    77,812.74x = 107,369.73 × 43,819.44
  4. Step 4: Simplify right side
    77,812.74x = 4,704,881,441.55
  5. Step 5: Solve for x
    x = 4,704,881,441.55/77,812.74
  6. Step 6: Final answer
    x = 60,464.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.