Finding the Fourth Proportional to 81,118.80, 121,656.60 and 24,958.80
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Solution
The fourth proportional to 81,118.80, 121,656.60 and 24,958.80 is: 37,431.55
Step by Step Solution
- Step 1: Write the proportion equation
81,118.80 : 121,656.60 = 24,958.80 : x - Step 2: Convert to fraction form
81,118.80/121,656.60 = 24,958.80/x - Step 3: Cross multiply
81,118.80x = 121,656.60 × 24,958.80 - Step 4: Simplify right side
81,118.80x = 3,036,402,748.08 - Step 5: Solve for x
x = 3,036,402,748.08/81,118.80 - Step 6: Final answer
x = 37,431.55
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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.