Finding the Fourth Proportional to 101,899.08, 140,625.12 and 56,577.08
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Solution
The fourth proportional to 101,899.08, 140,625.12 and 56,577.08 is: 78,078.80
Step by Step Solution
- Step 1: Write the proportion equation
101,899.08 : 140,625.12 = 56,577.08 : x - Step 2: Convert to fraction form
101,899.08/140,625.12 = 56,577.08/x - Step 3: Cross multiply
101,899.08x = 140,625.12 × 56,577.08 - Step 4: Simplify right side
101,899.08x = 7,956,157,961.12 - Step 5: Solve for x
x = 7,956,157,961.12/101,899.08 - Step 6: Final answer
x = 78,078.80
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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.