Finding the Fourth Proportional to 76,901.07, 115,351.61 and 39,440.32
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Solution
The fourth proportional to 76,901.07, 115,351.61 and 39,440.32 is: 59,160.49
Step by Step Solution
- Step 1: Write the proportion equation
76,901.07 : 115,351.61 = 39,440.32 : x - Step 2: Convert to fraction form
76,901.07/115,351.61 = 39,440.32/x - Step 3: Cross multiply
76,901.07x = 115,351.61 × 39,440.32 - Step 4: Simplify right side
76,901.07x = 4,549,504,710.76 - Step 5: Solve for x
x = 4,549,504,710.76/76,901.07 - Step 6: Final answer
x = 59,160.49
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Double scale
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Similar ratio
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1.5x scale
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.