Finding the Fourth Proportional to 85,854.24, 118,478.40 and 48,128.48
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Solution
The fourth proportional to 85,854.24, 118,478.40 and 48,128.48 is: 66,417.05
Step by Step Solution
- Step 1: Write the proportion equation
85,854.24 : 118,478.40 = 48,128.48 : x - Step 2: Convert to fraction form
85,854.24/118,478.40 = 48,128.48/x - Step 3: Cross multiply
85,854.24x = 118,478.40 × 48,128.48 - Step 4: Simplify right side
85,854.24x = 5,702,185,304.83 - Step 5: Solve for x
x = 5,702,185,304.83/85,854.24 - Step 6: Final answer
x = 66,417.05
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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.