Finding the Fourth Proportional to 91,948.23, 126,959.41 and 74,122.81
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Solution
The fourth proportional to 91,948.23, 126,959.41 and 74,122.81 is: 102,346.59
Step by Step Solution
- Step 1: Write the proportion equation
91,948.23 : 126,959.41 = 74,122.81 : x - Step 2: Convert to fraction form
91,948.23/126,959.41 = 74,122.81/x - Step 3: Cross multiply
91,948.23x = 126,959.41 × 74,122.81 - Step 4: Simplify right side
91,948.23x = 9,410,588,000.40 - Step 5: Solve for x
x = 9,410,588,000.40/91,948.23 - Step 6: Final answer
x = 102,346.59
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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.