Finding the Fourth Proportional to 74,520.19, 102,839.66 and 42,699.07
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Solution
The fourth proportional to 74,520.19, 102,839.66 and 42,699.07 is: 58,925.75
Step by Step Solution
- Step 1: Write the proportion equation
74,520.19 : 102,839.66 = 42,699.07 : x - Step 2: Convert to fraction form
74,520.19/102,839.66 = 42,699.07/x - Step 3: Cross multiply
74,520.19x = 102,839.66 × 42,699.07 - Step 4: Simplify right side
74,520.19x = 4,391,157,841.12 - Step 5: Solve for x
x = 4,391,157,841.12/74,520.19 - Step 6: Final answer
x = 58,925.75
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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.