Finding the Fourth Proportional to 86,221.08, 118,991.30 and 47,983.82
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Solution
The fourth proportional to 86,221.08, 118,991.30 and 47,983.82 is: 66,221.12
Step by Step Solution
- Step 1: Write the proportion equation
86,221.08 : 118,991.30 = 47,983.82 : x - Step 2: Convert to fraction form
86,221.08/118,991.30 = 47,983.82/x - Step 3: Cross multiply
86,221.08x = 118,991.30 × 47,983.82 - Step 4: Simplify right side
86,221.08x = 5,709,656,285.89 - Step 5: Solve for x
x = 5,709,656,285.89/86,221.08 - Step 6: Final answer
x = 66,221.12
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1.5x scale
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.