Finding the Fourth Proportional to 77,879.42, 107,474.09 and 45,633.09
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Solution
The fourth proportional to 77,879.42, 107,474.09 and 45,633.09 is: 62,973.95
Step by Step Solution
- Step 1: Write the proportion equation
77,879.42 : 107,474.09 = 45,633.09 : x - Step 2: Convert to fraction form
77,879.42/107,474.09 = 45,633.09/x - Step 3: Cross multiply
77,879.42x = 107,474.09 × 45,633.09 - Step 4: Simplify right side
77,879.42x = 4,904,374,593.47 - Step 5: Solve for x
x = 4,904,374,593.47/77,879.42 - Step 6: Final answer
x = 62,973.95
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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.