Finding the Fourth Proportional to 99,129.24, 136,806.50 and 56,695.96
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Solution
The fourth proportional to 99,129.24, 136,806.50 and 56,695.96 is: 78,245.09
Step by Step Solution
- Step 1: Write the proportion equation
99,129.24 : 136,806.50 = 56,695.96 : x - Step 2: Convert to fraction form
99,129.24/136,806.50 = 56,695.96/x - Step 3: Cross multiply
99,129.24x = 136,806.50 × 56,695.96 - Step 4: Simplify right side
99,129.24x = 7,756,375,851.74 - Step 5: Solve for x
x = 7,756,375,851.74/99,129.24 - Step 6: Final answer
x = 78,245.09
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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.