Finding the Fourth Proportional to 99,959.96, 137,948.46 and 54,640.99
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Solution
The fourth proportional to 99,959.96, 137,948.46 and 54,640.99 is: 75,406.60
Step by Step Solution
- Step 1: Write the proportion equation
99,959.96 : 137,948.46 = 54,640.99 : x - Step 2: Convert to fraction form
99,959.96/137,948.46 = 54,640.99/x - Step 3: Cross multiply
99,959.96x = 137,948.46 × 54,640.99 - Step 4: Simplify right side
99,959.96x = 7,537,640,423.38 - Step 5: Solve for x
x = 7,537,640,423.38/99,959.96 - Step 6: Final answer
x = 75,406.60
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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.