Finding the Fourth Proportional to 101,361.08, 139,878.60 and 56,649.08
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Solution
The fourth proportional to 101,361.08, 139,878.60 and 56,649.08 is: 78,175.90
Step by Step Solution
- Step 1: Write the proportion equation
101,361.08 : 139,878.60 = 56,649.08 : x - Step 2: Convert to fraction form
101,361.08/139,878.60 = 56,649.08/x - Step 3: Cross multiply
101,361.08x = 139,878.60 × 56,649.08 - Step 4: Simplify right side
101,361.08x = 7,923,994,001.69 - Step 5: Solve for x
x = 7,923,994,001.69/101,361.08 - Step 6: Final answer
x = 78,175.90
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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.