Finding the Fourth Proportional to 77,968.96, 107,597.22 and 42,158.99
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Solution
The fourth proportional to 77,968.96, 107,597.22 and 42,158.99 is: 58,179.44
Step by Step Solution
- Step 1: Write the proportion equation
77,968.96 : 107,597.22 = 42,158.99 : x - Step 2: Convert to fraction form
77,968.96/107,597.22 = 42,158.99/x - Step 3: Cross multiply
77,968.96x = 107,597.22 × 42,158.99 - Step 4: Simplify right side
77,968.96x = 4,536,190,122.01 - Step 5: Solve for x
x = 4,536,190,122.01/77,968.96 - Step 6: Final answer
x = 58,179.44
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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.