Finding the Fourth Proportional to 38,993,412.49, 53,812,590.68 and 21,589,757.66
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Solution
The fourth proportional to 38,993,412.49, 53,812,590.68 and 21,589,757.66 is: 29,794,796.55
Step by Step Solution
- Step 1: Write the proportion equation
38,993,412.49 : 53,812,590.68 = 21,589,757.66 : x - Step 2: Convert to fraction form
38,993,412.49/53,812,590.68 = 21,589,757.66/x - Step 3: Cross multiply
38,993,412.49x = 53,812,590.68 × 21,589,757.66 - Step 4: Simplify right side
38,993,412.49x = 1,161,800,791,837,974.50 - Step 5: Solve for x
x = 1,161,800,791,837,974.50/38,993,412.49 - Step 6: Final answer
x = 29,794,796.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.