Finding the Fourth Proportional to 39,521,724.13, 54,539,979.29 and 21,433,788.13
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Solution
The fourth proportional to 39,521,724.13, 54,539,979.29 and 21,433,788.13 is: 29,578,627.61
Step by Step Solution
- Step 1: Write the proportion equation
39,521,724.13 : 54,539,979.29 = 21,433,788.13 : x - Step 2: Convert to fraction form
39,521,724.13/54,539,979.29 = 21,433,788.13/x - Step 3: Cross multiply
39,521,724.13x = 54,539,979.29 × 21,433,788.13 - Step 4: Simplify right side
39,521,724.13x = 1,168,998,360,716,447.75 - Step 5: Solve for x
x = 1,168,998,360,716,447.75/39,521,724.13 - Step 6: Final answer
x = 29,578,627.61
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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.