Finding the Fourth Proportional to 98,821.30, 136,372.44 and 53,498.09
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Solution
The fourth proportional to 98,821.30, 136,372.44 and 53,498.09 is: 73,826.85
Step by Step Solution
- Step 1: Write the proportion equation
98,821.30 : 136,372.44 = 53,498.09 : x - Step 2: Convert to fraction form
98,821.30/136,372.44 = 53,498.09/x - Step 3: Cross multiply
98,821.30x = 136,372.44 × 53,498.09 - Step 4: Simplify right side
98,821.30x = 7,295,665,068.64 - Step 5: Solve for x
x = 7,295,665,068.64/98,821.30 - Step 6: Final answer
x = 73,826.85
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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.