Finding the Fourth Proportional to 80,841,128.40, 121,279,407.30 and 39,920,171.40
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Solution
The fourth proportional to 80,841,128.40, 121,279,407.30 and 39,920,171.40 is: 59,889,004.80
Step by Step Solution
- Step 1: Write the proportion equation
80,841,128.40 : 121,279,407.30 = 39,920,171.40 : x - Step 2: Convert to fraction form
80,841,128.40/121,279,407.30 = 39,920,171.40/x - Step 3: Cross multiply
80,841,128.40x = 121,279,407.30 × 39,920,171.40 - Step 4: Simplify right side
80,841,128.40x = 4,841,494,726,706,411 - Step 5: Solve for x
x = 4,841,494,726,706,411/80,841,128.40 - Step 6: Final answer
x = 59,889,004.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.