Finding the Fourth Proportional to 72,306,357.53, 99,782,464.82 and 39,266,375.31
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Solution
The fourth proportional to 72,306,357.53, 99,782,464.82 and 39,266,375.31 is: 54,187,430.36
Step by Step Solution
- Step 1: Write the proportion equation
72,306,357.53 : 99,782,464.82 = 39,266,375.31 : x - Step 2: Convert to fraction form
72,306,357.53/99,782,464.82 = 39,266,375.31/x - Step 3: Cross multiply
72,306,357.53x = 99,782,464.82 × 39,266,375.31 - Step 4: Simplify right side
72,306,357.53x = 3,918,095,712,782,660 - Step 5: Solve for x
x = 3,918,095,712,782,660/72,306,357.53 - Step 6: Final answer
x = 54,187,430.36
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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.