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Finding the Fourth Proportional to 76,628,375.60, 114,942,563.40 and 68,314,276.40

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Solution

The fourth proportional to 76,628,375.60, 114,942,563.40 and 68,314,276.40 is: 102,471,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,628,375.60 : 114,942,563.40 = 68,314,276.40 : x
  2. Step 2: Convert to fraction form
    76,628,375.60/114,942,563.40 = 68,314,276.40/x
  3. Step 3: Cross multiply
    76,628,375.60x = 114,942,563.40 × 68,314,276.40
  4. Step 4: Simplify right side
    76,628,375.60x = 7,852,218,046,232,125
  5. Step 5: Solve for x
    x = 7,852,218,046,232,125/76,628,375.60
  6. Step 6: Final answer
    x = 102,471,414.60

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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.