Finding the Fourth Proportional to 84,117.79, 125,924.59 and 81,126.97
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Solution
The fourth proportional to 84,117.79, 125,924.59 and 81,126.97 is: 121,447.32
Step by Step Solution
- Step 1: Write the proportion equation
84,117.79 : 125,924.59 = 81,126.97 : x - Step 2: Convert to fraction form
84,117.79/125,924.59 = 81,126.97/x - Step 3: Cross multiply
84,117.79x = 125,924.59 × 81,126.97 - Step 4: Simplify right side
84,117.79x = 10,215,880,435.19 - Step 5: Solve for x
x = 10,215,880,435.19/84,117.79 - Step 6: Final answer
x = 121,447.32
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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.