Finding the Fourth Proportional to 90,078.99, 135,012.98 and 36,737.70
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Solution
The fourth proportional to 90,078.99, 135,012.98 and 36,737.70 is: 55,063.52
Step by Step Solution
- Step 1: Write the proportion equation
90,078.99 : 135,012.98 = 36,737.70 : x - Step 2: Convert to fraction form
90,078.99/135,012.98 = 36,737.70/x - Step 3: Cross multiply
90,078.99x = 135,012.98 × 36,737.70 - Step 4: Simplify right side
90,078.99x = 4,960,066,171.66 - Step 5: Solve for x
x = 4,960,066,171.66/90,078.99 - Step 6: Final answer
x = 55,063.52
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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.