Finding the Fourth Proportional to 98,980.40, 136,593.08 and 53,658.64
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Solution
The fourth proportional to 98,980.40, 136,593.08 and 53,658.64 is: 74,048.99
Step by Step Solution
- Step 1: Write the proportion equation
98,980.40 : 136,593.08 = 53,658.64 : x - Step 2: Convert to fraction form
98,980.40/136,593.08 = 53,658.64/x - Step 3: Cross multiply
98,980.40x = 136,593.08 × 53,658.64 - Step 4: Simplify right side
98,980.40x = 7,329,398,906.21 - Step 5: Solve for x
x = 7,329,398,906.21/98,980.40 - Step 6: Final answer
x = 74,048.99
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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.