Finding the Fourth Proportional to 103,689.14, 155,532.68 and 47,513.31
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Solution
The fourth proportional to 103,689.14, 155,532.68 and 47,513.31 is: 71,269.49
Step by Step Solution
- Step 1: Write the proportion equation
103,689.14 : 155,532.68 = 47,513.31 : x - Step 2: Convert to fraction form
103,689.14/155,532.68 = 47,513.31/x - Step 3: Cross multiply
103,689.14x = 155,532.68 × 47,513.31 - Step 4: Simplify right side
103,689.14x = 7,389,872,439.97 - Step 5: Solve for x
x = 7,389,872,439.97/103,689.14 - Step 6: Final answer
x = 71,269.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.