Finding the Fourth Proportional to 72,805,302,611.84, 109,207,953,917.88 and 20,460,489,875.84
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Solution
The fourth proportional to 72,805,302,611.84, 109,207,953,917.88 and 20,460,489,875.84 is: 30,690,734,813.79
Step by Step Solution
- Step 1: Write the proportion equation
72,805,302,611.84 : 109,207,953,917.88 = 20,460,489,875.84 : x - Step 2: Convert to fraction form
72,805,302,611.84/109,207,953,917.88 = 20,460,489,875.84/x - Step 3: Cross multiply
72,805,302,611.84x = 109,207,953,917.88 × 20,460,489,875.84 - Step 4: Simplify right side
72,805,302,611.84x = 2,234,448,235,497,985,146,880 - Step 5: Solve for x
x = 2,234,448,235,497,985,146,880/72,805,302,611.84 - Step 6: Final answer
x = 30,690,734,813.79
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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.