Finding the Fourth Proportional to 74,476.23, 102,678.43 and 61,682.28
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Solution
The fourth proportional to 74,476.23, 102,678.43 and 61,682.28 is: 85,039.75
Step by Step Solution
- Step 1: Write the proportion equation
74,476.23 : 102,678.43 = 61,682.28 : x - Step 2: Convert to fraction form
74,476.23/102,678.43 = 61,682.28/x - Step 3: Cross multiply
74,476.23x = 102,678.43 × 61,682.28 - Step 4: Simplify right side
74,476.23x = 6,333,439,669.22 - Step 5: Solve for x
x = 6,333,439,669.22/74,476.23 - Step 6: Final answer
x = 85,039.75
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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.