Finding the Fourth Proportional to 99,447.68, 137,233.68 and 57,003.68
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Solution
The fourth proportional to 99,447.68, 137,233.68 and 57,003.68 is: 78,662.72
Step by Step Solution
- Step 1: Write the proportion equation
99,447.68 : 137,233.68 = 57,003.68 : x - Step 2: Convert to fraction form
99,447.68/137,233.68 = 57,003.68/x - Step 3: Cross multiply
99,447.68x = 137,233.68 × 57,003.68 - Step 4: Simplify right side
99,447.68x = 7,822,824,779.94 - Step 5: Solve for x
x = 7,822,824,779.94/99,447.68 - Step 6: Final answer
x = 78,662.72
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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.