Finding the Fourth Proportional to 85,238.18, 117,841.26 and 63,980.54
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Solution
The fourth proportional to 85,238.18, 117,841.26 and 63,980.54 is: 88,452.70
Step by Step Solution
- Step 1: Write the proportion equation
85,238.18 : 117,841.26 = 63,980.54 : x - Step 2: Convert to fraction form
85,238.18/117,841.26 = 63,980.54/x - Step 3: Cross multiply
85,238.18x = 117,841.26 × 63,980.54 - Step 4: Simplify right side
85,238.18x = 7,539,547,449.08 - Step 5: Solve for x
x = 7,539,547,449.08/85,238.18 - Step 6: Final answer
x = 88,452.70
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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.