Finding the Fourth Proportional to 77,129,559.54, 115,633,465.38 and 38,241,198.45
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Solution
The fourth proportional to 77,129,559.54, 115,633,465.38 and 38,241,198.45 is: 57,331,616.09
Step by Step Solution
- Step 1: Write the proportion equation
77,129,559.54 : 115,633,465.38 = 38,241,198.45 : x - Step 2: Convert to fraction form
77,129,559.54/115,633,465.38 = 38,241,198.45/x - Step 3: Cross multiply
77,129,559.54x = 115,633,465.38 × 38,241,198.45 - Step 4: Simplify right side
77,129,559.54x = 4,421,962,297,057,785 - Step 5: Solve for x
x = 4,421,962,297,057,785/77,129,559.54 - Step 6: Final answer
x = 57,331,616.09
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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.