Finding the Fourth Proportional to 77,129,544.50, 115,633,442.88 and 38,241,183.40
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Solution
The fourth proportional to 77,129,544.50, 115,633,442.88 and 38,241,183.40 is: 57,331,593.55
Step by Step Solution
- Step 1: Write the proportion equation
77,129,544.50 : 115,633,442.88 = 38,241,183.40 : x - Step 2: Convert to fraction form
77,129,544.50/115,633,442.88 = 38,241,183.40/x - Step 3: Cross multiply
77,129,544.50x = 115,633,442.88 × 38,241,183.40 - Step 4: Simplify right side
77,129,544.50x = 4,421,959,696,347,504 - Step 5: Solve for x
x = 4,421,959,696,347,504/77,129,544.50 - Step 6: Final answer
x = 57,331,593.55
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1.5x scale
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.