Finding the Fourth Proportional to 70,981,284.80, 106,471,927.20 and 45,472,116.80
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Solution
The fourth proportional to 70,981,284.80, 106,471,927.20 and 45,472,116.80 is: 68,208,175.20
Step by Step Solution
- Step 1: Write the proportion equation
70,981,284.80 : 106,471,927.20 = 45,472,116.80 : x - Step 2: Convert to fraction form
70,981,284.80/106,471,927.20 = 45,472,116.80/x - Step 3: Cross multiply
70,981,284.80x = 106,471,927.20 × 45,472,116.80 - Step 4: Simplify right side
70,981,284.80x = 4,841,503,909,559,497 - Step 5: Solve for x
x = 4,841,503,909,559,497/70,981,284.80 - Step 6: Final answer
x = 68,208,175.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.