Finding the Fourth Proportional to 86,225.15, 118,988.28 and 47,984.09
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Solution
The fourth proportional to 86,225.15, 118,988.28 and 47,984.09 is: 66,216.69
Step by Step Solution
- Step 1: Write the proportion equation
86,225.15 : 118,988.28 = 47,984.09 : x - Step 2: Convert to fraction form
86,225.15/118,988.28 = 47,984.09/x - Step 3: Cross multiply
86,225.15x = 118,988.28 × 47,984.09 - Step 4: Simplify right side
86,225.15x = 5,709,544,633.94 - Step 5: Solve for x
x = 5,709,544,633.94/86,225.15 - Step 6: Final answer
x = 66,216.69
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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.