Finding the Fourth Proportional to 78,701.31, 118,081.13 and 36,603.99
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Solution
The fourth proportional to 78,701.31, 118,081.13 and 36,603.99 is: 54,919.55
Step by Step Solution
- Step 1: Write the proportion equation
78,701.31 : 118,081.13 = 36,603.99 : x - Step 2: Convert to fraction form
78,701.31/118,081.13 = 36,603.99/x - Step 3: Cross multiply
78,701.31x = 118,081.13 × 36,603.99 - Step 4: Simplify right side
78,701.31x = 4,322,240,501.71 - Step 5: Solve for x
x = 4,322,240,501.71/78,701.31 - Step 6: Final answer
x = 54,919.55
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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.