Finding the Fourth Proportional to 87,057.18, 130,509.20 and 34,503.56
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Solution
The fourth proportional to 87,057.18, 130,509.20 and 34,503.56 is: 51,724.99
Step by Step Solution
- Step 1: Write the proportion equation
87,057.18 : 130,509.20 = 34,503.56 : x - Step 2: Convert to fraction form
87,057.18/130,509.20 = 34,503.56/x - Step 3: Cross multiply
87,057.18x = 130,509.20 × 34,503.56 - Step 4: Simplify right side
87,057.18x = 4,503,032,012.75 - Step 5: Solve for x
x = 4,503,032,012.75/87,057.18 - Step 6: Final answer
x = 51,724.99
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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.