Finding the Fourth Proportional to 91,178.14, 125,892.49 and 58,931.84
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Solution
The fourth proportional to 91,178.14, 125,892.49 and 58,931.84 is: 81,369.02
Step by Step Solution
- Step 1: Write the proportion equation
91,178.14 : 125,892.49 = 58,931.84 : x - Step 2: Convert to fraction form
91,178.14/125,892.49 = 58,931.84/x - Step 3: Cross multiply
91,178.14x = 125,892.49 × 58,931.84 - Step 4: Simplify right side
91,178.14x = 7,419,076,077.88 - Step 5: Solve for x
x = 7,419,076,077.88/91,178.14 - Step 6: Final answer
x = 81,369.02
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1.5x scale
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.