Finding the Fourth Proportional to 87,724.26, 121,117.59 and 67,545.54
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Solution
The fourth proportional to 87,724.26, 121,117.59 and 67,545.54 is: 93,257.59
Step by Step Solution
- Step 1: Write the proportion equation
87,724.26 : 121,117.59 = 67,545.54 : x - Step 2: Convert to fraction form
87,724.26/121,117.59 = 67,545.54/x - Step 3: Cross multiply
87,724.26x = 121,117.59 × 67,545.54 - Step 4: Simplify right side
87,724.26x = 8,180,953,020.05 - Step 5: Solve for x
x = 8,180,953,020.05/87,724.26 - Step 6: Final answer
x = 93,257.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.