Finding the Fourth Proportional to 87,867,990.51, 121,257,824.28 and 48,709,668.03
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Solution
The fourth proportional to 87,867,990.51, 121,257,824.28 and 48,709,668.03 is: 67,219,340.42
Step by Step Solution
- Step 1: Write the proportion equation
87,867,990.51 : 121,257,824.28 = 48,709,668.03 : x - Step 2: Convert to fraction form
87,867,990.51/121,257,824.28 = 48,709,668.03/x - Step 3: Cross multiply
87,867,990.51x = 121,257,824.28 × 48,709,668.03 - Step 4: Simplify right side
87,867,990.51x = 5,906,428,365,869,036 - Step 5: Solve for x
x = 5,906,428,365,869,036/87,867,990.51 - Step 6: Final answer
x = 67,219,340.42
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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.