Finding the Fourth Proportional to 30,618,744.99, 45,867,976.93 and 20,212,257.90
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Solution
The fourth proportional to 30,618,744.99, 45,867,976.93 and 20,212,257.90 is: 30,278,686.45
Step by Step Solution
- Step 1: Write the proportion equation
30,618,744.99 : 45,867,976.93 = 20,212,257.90 : x - Step 2: Convert to fraction form
30,618,744.99/45,867,976.93 = 20,212,257.90/x - Step 3: Cross multiply
30,618,744.99x = 45,867,976.93 × 20,212,257.90 - Step 4: Simplify right side
30,618,744.99x = 927,095,379,060,410.12 - Step 5: Solve for x
x = 927,095,379,060,410.12/30,618,744.99 - Step 6: Final answer
x = 30,278,686.45
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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.