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Finding the Fourth Proportional to 66,019,251.80, 99,033,251.70 and 17,496,428.60

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Solution

The fourth proportional to 66,019,251.80, 99,033,251.70 and 17,496,428.60 is: 26,245,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019,251.80 : 99,033,251.70 = 17,496,428.60 : x
  2. Step 2: Convert to fraction form
    66,019,251.80/99,033,251.70 = 17,496,428.60/x
  3. Step 3: Cross multiply
    66,019,251.80x = 99,033,251.70 × 17,496,428.60
  4. Step 4: Simplify right side
    66,019,251.80x = 1,732,728,217,394,878.75
  5. Step 5: Solve for x
    x = 1,732,728,217,394,878.75/66,019,251.80
  6. Step 6: Final answer
    x = 26,245,802.10

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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.