Finding the Fourth Proportional to 81,791.12, 122,594.52 and 40,267.28
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Solution
The fourth proportional to 81,791.12, 122,594.52 and 40,267.28 is: 60,355.55
Step by Step Solution
- Step 1: Write the proportion equation
81,791.12 : 122,594.52 = 40,267.28 : x - Step 2: Convert to fraction form
81,791.12/122,594.52 = 40,267.28/x - Step 3: Cross multiply
81,791.12x = 122,594.52 × 40,267.28 - Step 4: Simplify right side
81,791.12x = 4,936,547,863.31 - Step 5: Solve for x
x = 4,936,547,863.31/81,791.12 - Step 6: Final answer
x = 60,355.55
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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.