Finding the Fourth Proportional to 77,853.10, 107,447.70 and 43,868.20
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Solution
The fourth proportional to 77,853.10, 107,447.70 and 43,868.20 is: 60,543.99
Step by Step Solution
- Step 1: Write the proportion equation
77,853.10 : 107,447.70 = 43,868.20 : x - Step 2: Convert to fraction form
77,853.10/107,447.70 = 43,868.20/x - Step 3: Cross multiply
77,853.10x = 107,447.70 × 43,868.20 - Step 4: Simplify right side
77,853.10x = 4,713,537,193.14 - Step 5: Solve for x
x = 4,713,537,193.14/77,853.10 - Step 6: Final answer
x = 60,543.99
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1.5x scale
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.