Finding the Fourth Proportional to 69,121,645.71, 103,682,435.75 and 20,598,261.18
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Solution
The fourth proportional to 69,121,645.71, 103,682,435.75 and 20,598,261.18 is: 30,897,381.99
Step by Step Solution
- Step 1: Write the proportion equation
69,121,645.71 : 103,682,435.75 = 20,598,261.18 : x - Step 2: Convert to fraction form
69,121,645.71/103,682,435.75 = 20,598,261.18/x - Step 3: Cross multiply
69,121,645.71x = 103,682,435.75 × 20,598,261.18 - Step 4: Simplify right side
69,121,645.71x = 2,135,677,891,357,069.25 - Step 5: Solve for x
x = 2,135,677,891,357,069.25/69,121,645.71 - Step 6: Final answer
x = 30,897,381.99
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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.