Finding the Fourth Proportional to 98,012.69, 135,236.68 and 57,711.75
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Solution
The fourth proportional to 98,012.69, 135,236.68 and 57,711.75 is: 79,629.95
Step by Step Solution
- Step 1: Write the proportion equation
98,012.69 : 135,236.68 = 57,711.75 : x - Step 2: Convert to fraction form
98,012.69/135,236.68 = 57,711.75/x - Step 3: Cross multiply
98,012.69x = 135,236.68 × 57,711.75 - Step 4: Simplify right side
98,012.69x = 7,804,745,466.99 - Step 5: Solve for x
x = 7,804,745,466.99/98,012.69 - Step 6: Final answer
x = 79,629.95
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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.