Finding the Fourth Proportional to 74,539.86, 102,865.86 and 42,708.12
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Solution
The fourth proportional to 74,539.86, 102,865.86 and 42,708.12 is: 58,937.69
Step by Step Solution
- Step 1: Write the proportion equation
74,539.86 : 102,865.86 = 42,708.12 : x - Step 2: Convert to fraction form
74,539.86/102,865.86 = 42,708.12/x - Step 3: Cross multiply
74,539.86x = 102,865.86 × 42,708.12 - Step 4: Simplify right side
74,539.86x = 4,393,207,492.78 - Step 5: Solve for x
x = 4,393,207,492.78/74,539.86 - Step 6: Final answer
x = 58,937.69
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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.