Finding the Fourth Proportional to 83,618.74, 115,415.99 and 51,769.54
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Solution
The fourth proportional to 83,618.74, 115,415.99 and 51,769.54 is: 71,455.67
Step by Step Solution
- Step 1: Write the proportion equation
83,618.74 : 115,415.99 = 51,769.54 : x - Step 2: Convert to fraction form
83,618.74/115,415.99 = 51,769.54/x - Step 3: Cross multiply
83,618.74x = 115,415.99 × 51,769.54 - Step 4: Simplify right side
83,618.74x = 5,975,032,710.94 - Step 5: Solve for x
x = 5,975,032,710.94/83,618.74 - Step 6: Final answer
x = 71,455.67
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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.