Finding the Fourth Proportional to 77,664.69, 107,184.60 and 43,681.68
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Solution
The fourth proportional to 77,664.69, 107,184.60 and 43,681.68 is: 60,284.84
Step by Step Solution
- Step 1: Write the proportion equation
77,664.69 : 107,184.60 = 43,681.68 : x - Step 2: Convert to fraction form
77,664.69/107,184.60 = 43,681.68/x - Step 3: Cross multiply
77,664.69x = 107,184.60 × 43,681.68 - Step 4: Simplify right side
77,664.69x = 4,682,003,398.13 - Step 5: Solve for x
x = 4,682,003,398.13/77,664.69 - Step 6: Final answer
x = 60,284.84
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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.