Finding the Fourth Proportional to 115,613,388.75, 159,531,812.64 and 63,388,681.68
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Solution
The fourth proportional to 115,613,388.75, 159,531,812.64 and 63,388,681.68 is: 87,468,340.81
Step by Step Solution
- Step 1: Write the proportion equation
115,613,388.75 : 159,531,812.64 = 63,388,681.68 : x - Step 2: Convert to fraction form
115,613,388.75/159,531,812.64 = 63,388,681.68/x - Step 3: Cross multiply
115,613,388.75x = 159,531,812.64 × 63,388,681.68 - Step 4: Simplify right side
115,613,388.75x = 10,112,511,289,270,360 - Step 5: Solve for x
x = 10,112,511,289,270,360/115,613,388.75 - Step 6: Final answer
x = 87,468,340.81
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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.