Finding the Fourth Proportional to 97,081.15, 133,971.71 and 54,639.68
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Solution
The fourth proportional to 97,081.15, 133,971.71 and 54,639.68 is: 75,402.59
Step by Step Solution
- Step 1: Write the proportion equation
97,081.15 : 133,971.71 = 54,639.68 : x - Step 2: Convert to fraction form
97,081.15/133,971.71 = 54,639.68/x - Step 3: Cross multiply
97,081.15x = 133,971.71 × 54,639.68 - Step 4: Simplify right side
97,081.15x = 7,320,170,420.40 - Step 5: Solve for x
x = 7,320,170,420.40/97,081.15 - Step 6: Final answer
x = 75,402.59
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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.