Finding the Fourth Proportional to 98,943.80, 136,542.14 and 53,623.08
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Solution
The fourth proportional to 98,943.80, 136,542.14 and 53,623.08 is: 73,999.69
Step by Step Solution
- Step 1: Write the proportion equation
98,943.80 : 136,542.14 = 53,623.08 : x - Step 2: Convert to fraction form
98,943.80/136,542.14 = 53,623.08/x - Step 3: Cross multiply
98,943.80x = 136,542.14 × 53,623.08 - Step 4: Simplify right side
98,943.80x = 7,321,810,096.59 - Step 5: Solve for x
x = 7,321,810,096.59/98,943.80 - Step 6: Final answer
x = 73,999.69
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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.