Finding the Fourth Proportional to 77,816.89, 107,385.84 and 47,599.99
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Solution
The fourth proportional to 77,816.89, 107,385.84 and 47,599.99 is: 65,687.09
Step by Step Solution
- Step 1: Write the proportion equation
77,816.89 : 107,385.84 = 47,599.99 : x - Step 2: Convert to fraction form
77,816.89/107,385.84 = 47,599.99/x - Step 3: Cross multiply
77,816.89x = 107,385.84 × 47,599.99 - Step 4: Simplify right side
77,816.89x = 5,111,564,910.14 - Step 5: Solve for x
x = 5,111,564,910.14/77,816.89 - Step 6: Final answer
x = 65,687.09
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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.