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Finding the Fourth Proportional to 66,440,309.80, 99,660,464.70 and 43,482,058.60

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Solution

The fourth proportional to 66,440,309.80, 99,660,464.70 and 43,482,058.60 is: 65,223,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440,309.80 : 99,660,464.70 = 43,482,058.60 : x
  2. Step 2: Convert to fraction form
    66,440,309.80/99,660,464.70 = 43,482,058.60/x
  3. Step 3: Cross multiply
    66,440,309.80x = 99,660,464.70 × 43,482,058.60
  4. Step 4: Simplify right side
    66,440,309.80x = 4,333,442,166,188,631.50
  5. Step 5: Solve for x
    x = 4,333,442,166,188,631.50/66,440,309.80
  6. Step 6: Final answer
    x = 65,223,087.90

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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.