Finding the Fourth Proportional to 84,084.61, 115,971.12 and 53,872.75
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Solution
The fourth proportional to 84,084.61, 115,971.12 and 53,872.75 is: 74,302.34
Step by Step Solution
- Step 1: Write the proportion equation
84,084.61 : 115,971.12 = 53,872.75 : x - Step 2: Convert to fraction form
84,084.61/115,971.12 = 53,872.75/x - Step 3: Cross multiply
84,084.61x = 115,971.12 × 53,872.75 - Step 4: Simplify right side
84,084.61x = 6,247,683,154.98 - Step 5: Solve for x
x = 6,247,683,154.98/84,084.61 - Step 6: Final answer
x = 74,302.34
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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.