Finding the Fourth Proportional to 74,285.69, 102,514.56 and 42,455.66
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Solution
The fourth proportional to 74,285.69, 102,514.56 and 42,455.66 is: 58,588.99
Step by Step Solution
- Step 1: Write the proportion equation
74,285.69 : 102,514.56 = 42,455.66 : x - Step 2: Convert to fraction form
74,285.69/102,514.56 = 42,455.66/x - Step 3: Cross multiply
74,285.69x = 102,514.56 × 42,455.66 - Step 4: Simplify right side
74,285.69x = 4,352,323,304.41 - Step 5: Solve for x
x = 4,352,323,304.41/74,285.69 - Step 6: Final answer
x = 58,588.99
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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.