Finding the Fourth Proportional to 77,750,229.57, 107,294,678.91 and 42,468,057.20
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Solution
The fourth proportional to 77,750,229.57, 107,294,678.91 and 42,468,057.20 is: 58,605,570.50
Step by Step Solution
- Step 1: Write the proportion equation
77,750,229.57 : 107,294,678.91 = 42,468,057.20 : x - Step 2: Convert to fraction form
77,750,229.57/107,294,678.91 = 42,468,057.20/x - Step 3: Cross multiply
77,750,229.57x = 107,294,678.91 × 42,468,057.20 - Step 4: Simplify right side
77,750,229.57x = 4,556,596,560,669,040 - Step 5: Solve for x
x = 4,556,596,560,669,040/77,750,229.57 - Step 6: Final answer
x = 58,605,570.50
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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.