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Finding the Fourth Proportional to 66,243,609, 99,365,413.50 and 18,374,553

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Solution

The fourth proportional to 66,243,609, 99,365,413.50 and 18,374,553 is: 27,561,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,243,609 : 99,365,413.50 = 18,374,553 : x
  2. Step 2: Convert to fraction form
    66,243,609/99,365,413.50 = 18,374,553/x
  3. Step 3: Cross multiply
    66,243,609x = 99,365,413.50 × 18,374,553
  4. Step 4: Simplify right side
    66,243,609x = 1,825,795,056,722,665.50
  5. Step 5: Solve for x
    x = 1,825,795,056,722,665.50/66,243,609
  6. Step 6: Final answer
    x = 27,561,829.50

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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.