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Finding the Fourth Proportional to 66,996,986.60, 100,589,958.30 and 41,487,818.60

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Solution

The fourth proportional to 66,996,986.60, 100,589,958.30 and 41,487,818.60 is: 62,290,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996,986.60 : 100,589,958.30 = 41,487,818.60 : x
  2. Step 2: Convert to fraction form
    66,996,986.60/100,589,958.30 = 41,487,818.60/x
  3. Step 3: Cross multiply
    66,996,986.60x = 100,589,958.30 × 41,487,818.60
  4. Step 4: Simplify right side
    66,996,986.60x = 4,173,257,942,931,964.50
  5. Step 5: Solve for x
    x = 4,173,257,942,931,964.50/66,996,986.60
  6. Step 6: Final answer
    x = 62,290,233.56

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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.