Finding the Fourth Proportional to 91,098.36, 136,603.80 and 51,644.88
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Solution
The fourth proportional to 91,098.36, 136,603.80 and 51,644.88 is: 77,442.52
Step by Step Solution
- Step 1: Write the proportion equation
91,098.36 : 136,603.80 = 51,644.88 : x - Step 2: Convert to fraction form
91,098.36/136,603.80 = 51,644.88/x - Step 3: Cross multiply
91,098.36x = 136,603.80 × 51,644.88 - Step 4: Simplify right side
91,098.36x = 7,054,886,858.54 - Step 5: Solve for x
x = 7,054,886,858.54/91,098.36 - Step 6: Final answer
x = 77,442.52
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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.