Finding the Fourth Proportional to 38,487,396.39, 53,112,184.19 and 20,845,860.05
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Solution
The fourth proportional to 38,487,396.39, 53,112,184.19 and 20,845,860.05 is: 28,767,057.85
Step by Step Solution
- Step 1: Write the proportion equation
38,487,396.39 : 53,112,184.19 = 20,845,860.05 : x - Step 2: Convert to fraction form
38,487,396.39/53,112,184.19 = 20,845,860.05/x - Step 3: Cross multiply
38,487,396.39x = 53,112,184.19 × 20,845,860.05 - Step 4: Simplify right side
38,487,396.39x = 1,107,169,158,434,915 - Step 5: Solve for x
x = 1,107,169,158,434,915/38,487,396.39 - Step 6: Final answer
x = 28,767,057.85
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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.