Finding the Fourth Proportional to 99,474.12, 137,272.86 and 54,762.12
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Solution
The fourth proportional to 99,474.12, 137,272.86 and 54,762.12 is: 75,570.94
Step by Step Solution
- Step 1: Write the proportion equation
99,474.12 : 137,272.86 = 54,762.12 : x - Step 2: Convert to fraction form
99,474.12/137,272.86 = 54,762.12/x - Step 3: Cross multiply
99,474.12x = 137,272.86 × 54,762.12 - Step 4: Simplify right side
99,474.12x = 7,517,352,832.06 - Step 5: Solve for x
x = 7,517,352,832.06/99,474.12 - Step 6: Final answer
x = 75,570.94
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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.