Finding the Fourth Proportional to 87,269.68, 130,916.26 and 28,091.08
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Solution
The fourth proportional to 87,269.68, 130,916.26 and 28,091.08 is: 42,140.40
Step by Step Solution
- Step 1: Write the proportion equation
87,269.68 : 130,916.26 = 28,091.08 : x - Step 2: Convert to fraction form
87,269.68/130,916.26 = 28,091.08/x - Step 3: Cross multiply
87,269.68x = 130,916.26 × 28,091.08 - Step 4: Simplify right side
87,269.68x = 3,677,579,132.96 - Step 5: Solve for x
x = 3,677,579,132.96/87,269.68 - Step 6: Final answer
x = 42,140.40
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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.