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Finding the Fourth Proportional to 76,815,261.32, 106,014,744.14 and 50,375,850.20

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Solution

The fourth proportional to 76,815,261.32, 106,014,744.14 and 50,375,850.20 is: 69,525,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815,261.32 : 106,014,744.14 = 50,375,850.20 : x
  2. Step 2: Convert to fraction form
    76,815,261.32/106,014,744.14 = 50,375,850.20/x
  3. Step 3: Cross multiply
    76,815,261.32x = 106,014,744.14 × 50,375,850.20
  4. Step 4: Simplify right side
    76,815,261.32x = 5,340,582,869,787,968
  5. Step 5: Solve for x
    x = 5,340,582,869,787,968/76,815,261.32
  6. Step 6: Final answer
    x = 69,525,023.78

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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.