Finding the Fourth Proportional to 99,434.69, 137,222.96 and 56,415.99
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Solution
The fourth proportional to 99,434.69, 137,222.96 and 56,415.99 is: 77,855.82
Step by Step Solution
- Step 1: Write the proportion equation
99,434.69 : 137,222.96 = 56,415.99 : x - Step 2: Convert to fraction form
99,434.69/137,222.96 = 56,415.99/x - Step 3: Cross multiply
99,434.69x = 137,222.96 × 56,415.99 - Step 4: Simplify right side
99,434.69x = 7,741,569,385.95 - Step 5: Solve for x
x = 7,741,569,385.95/99,434.69 - Step 6: Final answer
x = 77,855.82
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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.