Finding the Fourth Proportional to 103,688.14, 155,531.18 and 47,512.31
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Solution
The fourth proportional to 103,688.14, 155,531.18 and 47,512.31 is: 71,267.99
Step by Step Solution
- Step 1: Write the proportion equation
103,688.14 : 155,531.18 = 47,512.31 : x - Step 2: Convert to fraction form
103,688.14/155,531.18 = 47,512.31/x - Step 3: Cross multiply
103,688.14x = 155,531.18 × 47,512.31 - Step 4: Simplify right side
103,688.14x = 7,389,645,638.83 - Step 5: Solve for x
x = 7,389,645,638.83/103,688.14 - Step 6: Final answer
x = 71,267.99
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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.