Finding the Fourth Proportional to 85,155.80, 117,517.08 and 47,430.68
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Solution
The fourth proportional to 85,155.80, 117,517.08 and 47,430.68 is: 65,455.49
Step by Step Solution
- Step 1: Write the proportion equation
85,155.80 : 117,517.08 = 47,430.68 : x - Step 2: Convert to fraction form
85,155.80/117,517.08 = 47,430.68/x - Step 3: Cross multiply
85,155.80x = 117,517.08 × 47,430.68 - Step 4: Simplify right side
85,155.80x = 5,573,915,016.01 - Step 5: Solve for x
x = 5,573,915,016.01/85,155.80 - Step 6: Final answer
x = 65,455.49
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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.