Finding the Fourth Proportional to 115,769,586.79, 159,762,307.86 and 63,561,986.92
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Solution
The fourth proportional to 115,769,586.79, 159,762,307.86 and 63,561,986.92 is: 87,715,694.63
Step by Step Solution
- Step 1: Write the proportion equation
115,769,586.79 : 159,762,307.86 = 63,561,986.92 : x - Step 2: Convert to fraction form
115,769,586.79/159,762,307.86 = 63,561,986.92/x - Step 3: Cross multiply
115,769,586.79x = 159,762,307.86 × 63,561,986.92 - Step 4: Simplify right side
115,769,586.79x = 10,154,809,721,389,710 - Step 5: Solve for x
x = 10,154,809,721,389,710/115,769,586.79 - Step 6: Final answer
x = 87,715,694.63
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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.