Finding the Fourth Proportional to 66,660,966.82, 99,981,346.97 and 18,142,601.45
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Solution
The fourth proportional to 66,660,966.82, 99,981,346.97 and 18,142,601.45 is: 27,211,152.45
Step by Step Solution
- Step 1: Write the proportion equation
66,660,966.82 : 99,981,346.97 = 18,142,601.45 : x - Step 2: Convert to fraction form
66,660,966.82/99,981,346.97 = 18,142,601.45/x - Step 3: Cross multiply
66,660,966.82x = 99,981,346.97 × 18,142,601.45 - Step 4: Simplify right side
66,660,966.82x = 1,813,921,730,516,667.75 - Step 5: Solve for x
x = 1,813,921,730,516,667.75/66,660,966.82 - Step 6: Final answer
x = 27,211,152.45
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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.