Finding the Fourth Proportional to 98,020.21, 135,246.99 and 57,719.26
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Solution
The fourth proportional to 98,020.21, 135,246.99 and 57,719.26 is: 79,640.27
Step by Step Solution
- Step 1: Write the proportion equation
98,020.21 : 135,246.99 = 57,719.26 : x - Step 2: Convert to fraction form
98,020.21/135,246.99 = 57,719.26/x - Step 3: Cross multiply
98,020.21x = 135,246.99 × 57,719.26 - Step 4: Simplify right side
98,020.21x = 7,806,356,180.03 - Step 5: Solve for x
x = 7,806,356,180.03/98,020.21 - Step 6: Final answer
x = 79,640.27
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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.