Finding the Fourth Proportional to 99,533.75, 137,356.58 and 54,821.75
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Solution
The fourth proportional to 99,533.75, 137,356.58 and 54,821.75 is: 75,654.02
Step by Step Solution
- Step 1: Write the proportion equation
99,533.75 : 137,356.58 = 54,821.75 : x - Step 2: Convert to fraction form
99,533.75/137,356.58 = 54,821.75/x - Step 3: Cross multiply
99,533.75x = 137,356.58 × 54,821.75 - Step 4: Simplify right side
99,533.75x = 7,530,127,815.51 - Step 5: Solve for x
x = 7,530,127,815.51/99,533.75 - Step 6: Final answer
x = 75,654.02
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1.5x scale
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.