Finding the Fourth Proportional to 99,924.64, 137,894.80 and 55,211.68
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Solution
The fourth proportional to 99,924.64, 137,894.80 and 55,211.68 is: 76,191.45
Step by Step Solution
- Step 1: Write the proportion equation
99,924.64 : 137,894.80 = 55,211.68 : x - Step 2: Convert to fraction form
99,924.64/137,894.80 = 55,211.68/x - Step 3: Cross multiply
99,924.64x = 137,894.80 × 55,211.68 - Step 4: Simplify right side
99,924.64x = 7,613,403,571.26 - Step 5: Solve for x
x = 7,613,403,571.26/99,924.64 - Step 6: Final answer
x = 76,191.45
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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.