Finding the Fourth Proportional to 75,669.18, 104,435.94 and 57,730.29
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Solution
The fourth proportional to 75,669.18, 104,435.94 and 57,730.29 is: 79,677.32
Step by Step Solution
- Step 1: Write the proportion equation
75,669.18 : 104,435.94 = 57,730.29 : x - Step 2: Convert to fraction form
75,669.18/104,435.94 = 57,730.29/x - Step 3: Cross multiply
75,669.18x = 104,435.94 × 57,730.29 - Step 4: Simplify right side
75,669.18x = 6,029,117,102.62 - Step 5: Solve for x
x = 6,029,117,102.62/75,669.18 - Step 6: Final answer
x = 79,677.32
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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.