Finding the Fourth Proportional to 77,881.42, 107,476.85 and 45,635.09
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Solution
The fourth proportional to 77,881.42, 107,476.85 and 45,635.09 is: 62,976.71
Step by Step Solution
- Step 1: Write the proportion equation
77,881.42 : 107,476.85 = 45,635.09 : x - Step 2: Convert to fraction form
77,881.42/107,476.85 = 45,635.09/x - Step 3: Cross multiply
77,881.42x = 107,476.85 × 45,635.09 - Step 4: Simplify right side
77,881.42x = 4,904,715,722.67 - Step 5: Solve for x
x = 4,904,715,722.67/77,881.42 - Step 6: Final answer
x = 62,976.71
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.