Finding the Fourth Proportional to 81,105.08, 121,566.78 and 53,079.08
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Solution
The fourth proportional to 81,105.08, 121,566.78 and 53,079.08 is: 79,559.17
Step by Step Solution
- Step 1: Write the proportion equation
81,105.08 : 121,566.78 = 53,079.08 : x - Step 2: Convert to fraction form
81,105.08/121,566.78 = 53,079.08/x - Step 3: Cross multiply
81,105.08x = 121,566.78 × 53,079.08 - Step 4: Simplify right side
81,105.08x = 6,452,652,840.96 - Step 5: Solve for x
x = 6,452,652,840.96/81,105.08 - Step 6: Final answer
x = 79,559.17
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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.