Finding the Fourth Proportional to 87,771,326.76, 121,205,849.58 and 65,706,519.60
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Solution
The fourth proportional to 87,771,326.76, 121,205,849.58 and 65,706,519.60 is: 90,735,947.89
Step by Step Solution
- Step 1: Write the proportion equation
87,771,326.76 : 121,205,849.58 = 65,706,519.60 : x - Step 2: Convert to fraction form
87,771,326.76/121,205,849.58 = 65,706,519.60/x - Step 3: Cross multiply
87,771,326.76x = 121,205,849.58 × 65,706,519.60 - Step 4: Simplify right side
87,771,326.76x = 7,964,014,531,062,922 - Step 5: Solve for x
x = 7,964,014,531,062,922/87,771,326.76 - Step 6: Final answer
x = 90,735,947.89
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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.