Finding the Fourth Proportional to 91,983.24, 126,913.50 and 56,160.18
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Solution
The fourth proportional to 91,983.24, 126,913.50 and 56,160.18 is: 77,486.78
Step by Step Solution
- Step 1: Write the proportion equation
91,983.24 : 126,913.50 = 56,160.18 : x - Step 2: Convert to fraction form
91,983.24/126,913.50 = 56,160.18/x - Step 3: Cross multiply
91,983.24x = 126,913.50 × 56,160.18 - Step 4: Simplify right side
91,983.24x = 7,127,485,004.43 - Step 5: Solve for x
x = 7,127,485,004.43/91,983.24 - Step 6: Final answer
x = 77,486.78
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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.