Finding the Fourth Proportional to 57,131,372.23, 78,865,418.36 and 38,571,642.70
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Solution
The fourth proportional to 57,131,372.23, 78,865,418.36 and 38,571,642.70 is: 53,245,154.45
Step by Step Solution
- Step 1: Write the proportion equation
57,131,372.23 : 78,865,418.36 = 38,571,642.70 : x - Step 2: Convert to fraction form
57,131,372.23/78,865,418.36 = 38,571,642.70/x - Step 3: Cross multiply
57,131,372.23x = 78,865,418.36 × 38,571,642.70 - Step 4: Simplify right side
57,131,372.23x = 3,041,968,738,367,940 - Step 5: Solve for x
x = 3,041,968,738,367,940/57,131,372.23 - Step 6: Final answer
x = 53,245,154.45
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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.