Finding the Fourth Proportional to 76,706.26, 115,060.82 and 21,303.70
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Solution
The fourth proportional to 76,706.26, 115,060.82 and 21,303.70 is: 31,955.95
Step by Step Solution
- Step 1: Write the proportion equation
76,706.26 : 115,060.82 = 21,303.70 : x - Step 2: Convert to fraction form
76,706.26/115,060.82 = 21,303.70/x - Step 3: Cross multiply
76,706.26x = 115,060.82 × 21,303.70 - Step 4: Simplify right side
76,706.26x = 2,451,221,191.03 - Step 5: Solve for x
x = 2,451,221,191.03/76,706.26 - Step 6: Final answer
x = 31,955.95
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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.