Finding the Fourth Proportional to 99,442.08, 137,232.60 and 54,122.52
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Solution
The fourth proportional to 99,442.08, 137,232.60 and 54,122.52 is: 74,690.45
Step by Step Solution
- Step 1: Write the proportion equation
99,442.08 : 137,232.60 = 54,122.52 : x - Step 2: Convert to fraction form
99,442.08/137,232.60 = 54,122.52/x - Step 3: Cross multiply
99,442.08x = 137,232.60 × 54,122.52 - Step 4: Simplify right side
99,442.08x = 7,427,374,138.15 - Step 5: Solve for x
x = 7,427,374,138.15/99,442.08 - Step 6: Final answer
x = 74,690.45
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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.