Finding the Fourth Proportional to 76,987.44, 106,239.72 and 48,322.44
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Solution
The fourth proportional to 76,987.44, 106,239.72 and 48,322.44 is: 66,683.12
Step by Step Solution
- Step 1: Write the proportion equation
76,987.44 : 106,239.72 = 48,322.44 : x - Step 2: Convert to fraction form
76,987.44/106,239.72 = 48,322.44/x - Step 3: Cross multiply
76,987.44x = 106,239.72 × 48,322.44 - Step 4: Simplify right side
76,987.44x = 5,133,762,495.32 - Step 5: Solve for x
x = 5,133,762,495.32/76,987.44 - Step 6: Final answer
x = 66,683.12
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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.