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Finding the Fourth Proportional to 67,840,405.80, 101,760,608.70 and 40,630,626.60

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Solution

The fourth proportional to 67,840,405.80, 101,760,608.70 and 40,630,626.60 is: 60,945,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,840,405.80 : 101,760,608.70 = 40,630,626.60 : x
  2. Step 2: Convert to fraction form
    67,840,405.80/101,760,608.70 = 40,630,626.60/x
  3. Step 3: Cross multiply
    67,840,405.80x = 101,760,608.70 × 40,630,626.60
  4. Step 4: Simplify right side
    67,840,405.80x = 4,134,597,294,678,411.50
  5. Step 5: Solve for x
    x = 4,134,597,294,678,411.50/67,840,405.80
  6. Step 6: Final answer
    x = 60,945,939.90

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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.