Finding the Fourth Proportional to 76,984.30, 106,236.28 and 42,991.84
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Solution
The fourth proportional to 76,984.30, 106,236.28 and 42,991.84 is: 59,327.59
Step by Step Solution
- Step 1: Write the proportion equation
76,984.30 : 106,236.28 = 42,991.84 : x - Step 2: Convert to fraction form
76,984.30/106,236.28 = 42,991.84/x - Step 3: Cross multiply
76,984.30x = 106,236.28 × 42,991.84 - Step 4: Simplify right side
76,984.30x = 4,567,293,151.96 - Step 5: Solve for x
x = 4,567,293,151.96/76,984.30 - Step 6: Final answer
x = 59,327.59
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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.