Finding the Fourth Proportional to 99,435.69, 137,224.34 and 56,416.99
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Solution
The fourth proportional to 99,435.69, 137,224.34 and 56,416.99 is: 77,857.20
Step by Step Solution
- Step 1: Write the proportion equation
99,435.69 : 137,224.34 = 56,416.99 : x - Step 2: Convert to fraction form
99,435.69/137,224.34 = 56,416.99/x - Step 3: Cross multiply
99,435.69x = 137,224.34 × 56,416.99 - Step 4: Simplify right side
99,435.69x = 7,741,784,217.54 - Step 5: Solve for x
x = 7,741,784,217.54/99,435.69 - Step 6: Final answer
x = 77,857.20
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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.