Finding the Fourth Proportional to 89,690.08, 134,327.76 and 86,579.68
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Solution
The fourth proportional to 89,690.08, 134,327.76 and 86,579.68 is: 129,669.35
Step by Step Solution
- Step 1: Write the proportion equation
89,690.08 : 134,327.76 = 86,579.68 : x - Step 2: Convert to fraction form
89,690.08/134,327.76 = 86,579.68/x - Step 3: Cross multiply
89,690.08x = 134,327.76 × 86,579.68 - Step 4: Simplify right side
89,690.08x = 11,630,054,475.92 - Step 5: Solve for x
x = 11,630,054,475.92/89,690.08 - Step 6: Final answer
x = 129,669.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.