Finding the Fourth Proportional to 91,603.23, 137,424.46 and 28,421.99
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Solution
The fourth proportional to 91,603.23, 137,424.46 and 28,421.99 is: 42,639.07
Step by Step Solution
- Step 1: Write the proportion equation
91,603.23 : 137,424.46 = 28,421.99 : x - Step 2: Convert to fraction form
91,603.23/137,424.46 = 28,421.99/x - Step 3: Cross multiply
91,603.23x = 137,424.46 × 28,421.99 - Step 4: Simplify right side
91,603.23x = 3,905,876,627.88 - Step 5: Solve for x
x = 3,905,876,627.88/91,603.23 - Step 6: Final answer
x = 42,639.07
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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.