Finding the Fourth Proportional to 87,692,521.34, 121,015,938.39 and 48,537,017.66
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Solution
The fourth proportional to 87,692,521.34, 121,015,938.39 and 48,537,017.66 is: 66,981,227.69
Step by Step Solution
- Step 1: Write the proportion equation
87,692,521.34 : 121,015,938.39 = 48,537,017.66 : x - Step 2: Convert to fraction form
87,692,521.34/121,015,938.39 = 48,537,017.66/x - Step 3: Cross multiply
87,692,521.34x = 121,015,938.39 × 48,537,017.66 - Step 4: Simplify right side
87,692,521.34x = 5,873,752,738,776,902 - Step 5: Solve for x
x = 5,873,752,738,776,902/87,692,521.34 - Step 6: Final answer
x = 66,981,227.69
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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.