Finding the Fourth Proportional to 109,715.78, 164,573.62 and 38,621.68
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Solution
The fourth proportional to 109,715.78, 164,573.62 and 38,621.68 is: 57,932.50
Step by Step Solution
- Step 1: Write the proportion equation
109,715.78 : 164,573.62 = 38,621.68 : x - Step 2: Convert to fraction form
109,715.78/164,573.62 = 38,621.68/x - Step 3: Cross multiply
109,715.78x = 164,573.62 × 38,621.68 - Step 4: Simplify right side
109,715.78x = 6,356,109,688.08 - Step 5: Solve for x
x = 6,356,109,688.08/109,715.78 - Step 6: Final answer
x = 57,932.50
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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.