Finding the Fourth Proportional to 91,217.70, 125,844.66 and 52,970.70
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Solution
The fourth proportional to 91,217.70, 125,844.66 and 52,970.70 is: 73,078.80
Step by Step Solution
- Step 1: Write the proportion equation
91,217.70 : 125,844.66 = 52,970.70 : x - Step 2: Convert to fraction form
91,217.70/125,844.66 = 52,970.70/x - Step 3: Cross multiply
91,217.70x = 125,844.66 × 52,970.70 - Step 4: Simplify right side
91,217.70x = 6,666,079,731.46 - Step 5: Solve for x
x = 6,666,079,731.46/91,217.70 - Step 6: Final answer
x = 73,078.80
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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.