Finding the Fourth Proportional to 91,357.98, 137,051.74 and 28,163.31
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Solution
The fourth proportional to 91,357.98, 137,051.74 and 28,163.31 is: 42,249.53
Step by Step Solution
- Step 1: Write the proportion equation
91,357.98 : 137,051.74 = 28,163.31 : x - Step 2: Convert to fraction form
91,357.98/137,051.74 = 28,163.31/x - Step 3: Cross multiply
91,357.98x = 137,051.74 × 28,163.31 - Step 4: Simplify right side
91,357.98x = 3,859,831,201.13 - Step 5: Solve for x
x = 3,859,831,201.13/91,357.98 - Step 6: Final answer
x = 42,249.53
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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.