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Finding the Fourth Proportional to 66,764,999.70, 100,147,499.55 and 55,285,874.10

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Solution

The fourth proportional to 66,764,999.70, 100,147,499.55 and 55,285,874.10 is: 82,928,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,764,999.70 : 100,147,499.55 = 55,285,874.10 : x
  2. Step 2: Convert to fraction form
    66,764,999.70/100,147,499.55 = 55,285,874.10/x
  3. Step 3: Cross multiply
    66,764,999.70x = 100,147,499.55 × 55,285,874.10
  4. Step 4: Simplify right side
    66,764,999.70x = 5,536,742,051,551,107
  5. Step 5: Solve for x
    x = 5,536,742,051,551,107/66,764,999.70
  6. Step 6: Final answer
    x = 82,928,811.15

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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.