Finding the Fourth Proportional to 99,680.36, 137,528.48 and 56,656.62
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Solution
The fourth proportional to 99,680.36, 137,528.48 and 56,656.62 is: 78,168.85
Step by Step Solution
- Step 1: Write the proportion equation
99,680.36 : 137,528.48 = 56,656.62 : x - Step 2: Convert to fraction form
99,680.36/137,528.48 = 56,656.62/x - Step 3: Cross multiply
99,680.36x = 137,528.48 × 56,656.62 - Step 4: Simplify right side
99,680.36x = 7,791,898,830.54 - Step 5: Solve for x
x = 7,791,898,830.54/99,680.36 - Step 6: Final answer
x = 78,168.85
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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.