Finding the Fourth Proportional to 115,690.17, 159,651.99 and 64,702.70
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Solution
The fourth proportional to 115,690.17, 159,651.99 and 64,702.70 is: 89,289.47
Step by Step Solution
- Step 1: Write the proportion equation
115,690.17 : 159,651.99 = 64,702.70 : x - Step 2: Convert to fraction form
115,690.17/159,651.99 = 64,702.70/x - Step 3: Cross multiply
115,690.17x = 159,651.99 × 64,702.70 - Step 4: Simplify right side
115,690.17x = 10,329,914,431.83 - Step 5: Solve for x
x = 10,329,914,431.83/115,690.17 - Step 6: Final answer
x = 89,289.47
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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.