Finding the Fourth Proportional to 98,020.69, 135,247.68 and 57,719.75
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Solution
The fourth proportional to 98,020.69, 135,247.68 and 57,719.75 is: 79,640.96
Step by Step Solution
- Step 1: Write the proportion equation
98,020.69 : 135,247.68 = 57,719.75 : x - Step 2: Convert to fraction form
98,020.69/135,247.68 = 57,719.75/x - Step 3: Cross multiply
98,020.69x = 135,247.68 × 57,719.75 - Step 4: Simplify right side
98,020.69x = 7,806,461,601.44 - Step 5: Solve for x
x = 7,806,461,601.44/98,020.69 - Step 6: Final answer
x = 79,640.96
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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.