Finding the Fourth Proportional to 72,511,486.80, 108,767,230.20 and 66,464,869.20
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Solution
The fourth proportional to 72,511,486.80, 108,767,230.20 and 66,464,869.20 is: 99,697,303.80
Step by Step Solution
- Step 1: Write the proportion equation
72,511,486.80 : 108,767,230.20 = 66,464,869.20 : x - Step 2: Convert to fraction form
72,511,486.80/108,767,230.20 = 66,464,869.20/x - Step 3: Cross multiply
72,511,486.80x = 108,767,230.20 × 66,464,869.20 - Step 4: Simplify right side
72,511,486.80x = 7,229,199,728,489,290 - Step 5: Solve for x
x = 7,229,199,728,489,290/72,511,486.80 - Step 6: Final answer
x = 99,697,303.80
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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.