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Finding the Fourth Proportional to 66,734,219.70, 100,101,329.55 and 53,745,189.30

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Solution

The fourth proportional to 66,734,219.70, 100,101,329.55 and 53,745,189.30 is: 80,617,783.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734,219.70 : 100,101,329.55 = 53,745,189.30 : x
  2. Step 2: Convert to fraction form
    66,734,219.70/100,101,329.55 = 53,745,189.30/x
  3. Step 3: Cross multiply
    66,734,219.70x = 100,101,329.55 × 53,745,189.30
  4. Step 4: Simplify right side
    66,734,219.70x = 5,379,964,905,846,433
  5. Step 5: Solve for x
    x = 5,379,964,905,846,433/66,734,219.70
  6. Step 6: Final answer
    x = 80,617,783.95

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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.