Finding the Fourth Proportional to 77,108.62, 115,663.74 and 27,179.40
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Solution
The fourth proportional to 77,108.62, 115,663.74 and 27,179.40 is: 40,769.39
Step by Step Solution
- Step 1: Write the proportion equation
77,108.62 : 115,663.74 = 27,179.40 : x - Step 2: Convert to fraction form
77,108.62/115,663.74 = 27,179.40/x - Step 3: Cross multiply
77,108.62x = 115,663.74 × 27,179.40 - Step 4: Simplify right side
77,108.62x = 3,143,671,054.96 - Step 5: Solve for x
x = 3,143,671,054.96/77,108.62 - Step 6: Final answer
x = 40,769.39
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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.