Finding the Fourth Proportional to 53,309,903.84, 79,964,855.92 and 12,920,387.68
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Solution
The fourth proportional to 53,309,903.84, 79,964,855.92 and 12,920,387.68 is: 19,380,581.56
Step by Step Solution
- Step 1: Write the proportion equation
53,309,903.84 : 79,964,855.92 = 12,920,387.68 : x - Step 2: Convert to fraction form
53,309,903.84/79,964,855.92 = 12,920,387.68/x - Step 3: Cross multiply
53,309,903.84x = 79,964,855.92 × 12,920,387.68 - Step 4: Simplify right side
53,309,903.84x = 1,033,176,939,261,743.12 - Step 5: Solve for x
x = 1,033,176,939,261,743.12/53,309,903.84 - Step 6: Final answer
x = 19,380,581.56
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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.