Finding the Fourth Proportional to 85,604.12, 128,356.80 and 26,423.96
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Solution
The fourth proportional to 85,604.12, 128,356.80 and 26,423.96 is: 39,620.70
Step by Step Solution
- Step 1: Write the proportion equation
85,604.12 : 128,356.80 = 26,423.96 : x - Step 2: Convert to fraction form
85,604.12/128,356.80 = 26,423.96/x - Step 3: Cross multiply
85,604.12x = 128,356.80 × 26,423.96 - Step 4: Simplify right side
85,604.12x = 3,391,694,948.93 - Step 5: Solve for x
x = 3,391,694,948.93/85,604.12 - Step 6: Final answer
x = 39,620.70
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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.