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Finding the Fourth Proportional to 66,440,297.80, 99,660,446.70 and 43,482,046.60

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Solution

The fourth proportional to 66,440,297.80, 99,660,446.70 and 43,482,046.60 is: 65,223,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440,297.80 : 99,660,446.70 = 43,482,046.60 : x
  2. Step 2: Convert to fraction form
    66,440,297.80/99,660,446.70 = 43,482,046.60/x
  3. Step 3: Cross multiply
    66,440,297.80x = 99,660,446.70 × 43,482,046.60
  4. Step 4: Simplify right side
    66,440,297.80x = 4,333,440,187,586,216.50
  5. Step 5: Solve for x
    x = 4,333,440,187,586,216.50/66,440,297.80
  6. Step 6: Final answer
    x = 65,223,069.90

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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.