Finding the Fourth Proportional to 102,701.80, 154,052.70 and 47,405.80
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Solution
The fourth proportional to 102,701.80, 154,052.70 and 47,405.80 is: 71,108.70
Step by Step Solution
- Step 1: Write the proportion equation
102,701.80 : 154,052.70 = 47,405.80 : x - Step 2: Convert to fraction form
102,701.80/154,052.70 = 47,405.80/x - Step 3: Cross multiply
102,701.80x = 154,052.70 × 47,405.80 - Step 4: Simplify right side
102,701.80x = 7,302,991,485.66 - Step 5: Solve for x
x = 7,302,991,485.66/102,701.80 - Step 6: Final answer
x = 71,108.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.