Finding the Fourth Proportional to 84,045.12, 126,226.08 and 77,110.08
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Solution
The fourth proportional to 84,045.12, 126,226.08 and 77,110.08 is: 115,810.45
Step by Step Solution
- Step 1: Write the proportion equation
84,045.12 : 126,226.08 = 77,110.08 : x - Step 2: Convert to fraction form
84,045.12/126,226.08 = 77,110.08/x - Step 3: Cross multiply
84,045.12x = 126,226.08 × 77,110.08 - Step 4: Simplify right side
84,045.12x = 9,733,303,126.89 - Step 5: Solve for x
x = 9,733,303,126.89/84,045.12 - Step 6: Final answer
x = 115,810.45
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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.