Finding the Fourth Proportional to 77,996.50, 116,994.76 and 25,405.99
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Solution
The fourth proportional to 77,996.50, 116,994.76 and 25,405.99 is: 38,108.99
Step by Step Solution
- Step 1: Write the proportion equation
77,996.50 : 116,994.76 = 25,405.99 : x - Step 2: Convert to fraction form
77,996.50/116,994.76 = 25,405.99/x - Step 3: Cross multiply
77,996.50x = 116,994.76 × 25,405.99 - Step 4: Simplify right side
77,996.50x = 2,972,367,702.61 - Step 5: Solve for x
x = 2,972,367,702.61/77,996.50 - Step 6: Final answer
x = 38,108.99
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1.5x scale
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.