Finding the Fourth Proportional to 74,635.09, 102,887.62 and 56,698.95
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Solution
The fourth proportional to 74,635.09, 102,887.62 and 56,698.95 is: 78,161.90
Step by Step Solution
- Step 1: Write the proportion equation
74,635.09 : 102,887.62 = 56,698.95 : x - Step 2: Convert to fraction form
74,635.09/102,887.62 = 56,698.95/x - Step 3: Cross multiply
74,635.09x = 102,887.62 × 56,698.95 - Step 4: Simplify right side
74,635.09x = 5,833,620,266.08 - Step 5: Solve for x
x = 5,833,620,266.08/74,635.09 - Step 6: Final answer
x = 78,161.90
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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.