Finding the Fourth Proportional to 77,339.68, 106,728.96 and 43,805.68
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Solution
The fourth proportional to 77,339.68, 106,728.96 and 43,805.68 is: 60,451.95
Step by Step Solution
- Step 1: Write the proportion equation
77,339.68 : 106,728.96 = 43,805.68 : x - Step 2: Convert to fraction form
77,339.68/106,728.96 = 43,805.68/x - Step 3: Cross multiply
77,339.68x = 106,728.96 × 43,805.68 - Step 4: Simplify right side
77,339.68x = 4,675,334,668.49 - Step 5: Solve for x
x = 4,675,334,668.49/77,339.68 - Step 6: Final answer
x = 60,451.95
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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.