Finding the Fourth Proportional to 86,117.99, 118,876.06 and 57,427.28
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Solution
The fourth proportional to 86,117.99, 118,876.06 and 57,427.28 is: 79,271.81
Step by Step Solution
- Step 1: Write the proportion equation
86,117.99 : 118,876.06 = 57,427.28 : x - Step 2: Convert to fraction form
86,117.99/118,876.06 = 57,427.28/x - Step 3: Cross multiply
86,117.99x = 118,876.06 × 57,427.28 - Step 4: Simplify right side
86,117.99x = 6,826,728,383.08 - Step 5: Solve for x
x = 6,826,728,383.08/86,117.99 - Step 6: Final answer
x = 79,271.81
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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.