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Finding the Fourth Proportional to 27,129,706.40, 40,694,559.60 and 19,902,108.80

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Solution

The fourth proportional to 27,129,706.40, 40,694,559.60 and 19,902,108.80 is: 29,853,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129,706.40 : 40,694,559.60 = 19,902,108.80 : x
  2. Step 2: Convert to fraction form
    27,129,706.40/40,694,559.60 = 19,902,108.80/x
  3. Step 3: Cross multiply
    27,129,706.40x = 40,694,559.60 × 19,902,108.80
  4. Step 4: Simplify right side
    27,129,706.40x = 809,907,552,727,284.50
  5. Step 5: Solve for x
    x = 809,907,552,727,284.50/27,129,706.40
  6. Step 6: Final answer
    x = 29,853,163.20

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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.