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Finding the Fourth Proportional to 66,545,769.70, 99,650,692.95 and 43,702,992.10

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Solution

The fourth proportional to 66,545,769.70, 99,650,692.95 and 43,702,992.10 is: 65,444,181.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,545,769.70 : 99,650,692.95 = 43,702,992.10 : x
  2. Step 2: Convert to fraction form
    66,545,769.70/99,650,692.95 = 43,702,992.10/x
  3. Step 3: Cross multiply
    66,545,769.70x = 99,650,692.95 × 43,702,992.10
  4. Step 4: Simplify right side
    66,545,769.70x = 4,355,033,446,753,376
  5. Step 5: Solve for x
    x = 4,355,033,446,753,376/66,545,769.70
  6. Step 6: Final answer
    x = 65,444,181.75

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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.