Finding the Fourth Proportional to 98,722.75, 136,237.40 and 54,010.75
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Solution
The fourth proportional to 98,722.75, 136,237.40 and 54,010.75 is: 74,534.84
Step by Step Solution
- Step 1: Write the proportion equation
98,722.75 : 136,237.40 = 54,010.75 : x - Step 2: Convert to fraction form
98,722.75/136,237.40 = 54,010.75/x - Step 3: Cross multiply
98,722.75x = 136,237.40 × 54,010.75 - Step 4: Simplify right side
98,722.75x = 7,358,284,152.05 - Step 5: Solve for x
x = 7,358,284,152.05/98,722.75 - Step 6: Final answer
x = 74,534.84
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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.