Finding the Fourth Proportional to 79,705.99, 109,997.19 and 49,507.96
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Solution
The fourth proportional to 79,705.99, 109,997.19 and 49,507.96 is: 68,322.80
Step by Step Solution
- Step 1: Write the proportion equation
79,705.99 : 109,997.19 = 49,507.96 : x - Step 2: Convert to fraction form
79,705.99/109,997.19 = 49,507.96/x - Step 3: Cross multiply
79,705.99x = 109,997.19 × 49,507.96 - Step 4: Simplify right side
79,705.99x = 5,445,736,482.63 - Step 5: Solve for x
x = 5,445,736,482.63/79,705.99 - Step 6: Final answer
x = 68,322.80
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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.