Finding the Fourth Proportional to 90,813,464.47, 125,320,832.13 and 49,560,652.09
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Solution
The fourth proportional to 90,813,464.47, 125,320,832.13 and 49,560,652.09 is: 68,392,745.47
Step by Step Solution
- Step 1: Write the proportion equation
90,813,464.47 : 125,320,832.13 = 49,560,652.09 : x - Step 2: Convert to fraction form
90,813,464.47/125,320,832.13 = 49,560,652.09/x - Step 3: Cross multiply
90,813,464.47x = 125,320,832.13 × 49,560,652.09 - Step 4: Simplify right side
90,813,464.47x = 6,210,982,160,824,224 - Step 5: Solve for x
x = 6,210,982,160,824,224/90,813,464.47 - Step 6: Final answer
x = 68,392,745.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.