Finding the Fourth Proportional to 115,685,442.12, 159,646,213.34 and 62,762,147.07
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Solution
The fourth proportional to 115,685,442.12, 159,646,213.34 and 62,762,147.07 is: 86,611,927.46
Step by Step Solution
- Step 1: Write the proportion equation
115,685,442.12 : 159,646,213.34 = 62,762,147.07 : x - Step 2: Convert to fraction form
115,685,442.12/159,646,213.34 = 62,762,147.07/x - Step 3: Cross multiply
115,685,442.12x = 159,646,213.34 × 62,762,147.07 - Step 4: Simplify right side
115,685,442.12x = 10,019,739,120,499,866 - Step 5: Solve for x
x = 10,019,739,120,499,866/115,685,442.12 - Step 6: Final answer
x = 86,611,927.46
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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.