Finding the Fourth Proportional to 89,470.51, 123,420.03 and 56,704.99
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Solution
The fourth proportional to 89,470.51, 123,420.03 and 56,704.99 is: 78,221.66
Step by Step Solution
- Step 1: Write the proportion equation
89,470.51 : 123,420.03 = 56,704.99 : x - Step 2: Convert to fraction form
89,470.51/123,420.03 = 56,704.99/x - Step 3: Cross multiply
89,470.51x = 123,420.03 × 56,704.99 - Step 4: Simplify right side
89,470.51x = 6,998,531,566.95 - Step 5: Solve for x
x = 6,998,531,566.95/89,470.51 - Step 6: Final answer
x = 78,221.66
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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.