Finding the Fourth Proportional to 85,374.74, 128,034.42 and 28,433.48
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Solution
The fourth proportional to 85,374.74, 128,034.42 and 28,433.48 is: 42,641.00
Step by Step Solution
- Step 1: Write the proportion equation
85,374.74 : 128,034.42 = 28,433.48 : x - Step 2: Convert to fraction form
85,374.74/128,034.42 = 28,433.48/x - Step 3: Cross multiply
85,374.74x = 128,034.42 × 28,433.48 - Step 4: Simplify right side
85,374.74x = 3,640,464,120.38 - Step 5: Solve for x
x = 3,640,464,120.38/85,374.74 - Step 6: Final answer
x = 42,641.00
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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.