Finding the Fourth Proportional to 85,653.14, 128,488.26 and 29,485.81
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Solution
The fourth proportional to 85,653.14, 128,488.26 and 29,485.81 is: 44,231.66
Step by Step Solution
- Step 1: Write the proportion equation
85,653.14 : 128,488.26 = 29,485.81 : x - Step 2: Convert to fraction form
85,653.14/128,488.26 = 29,485.81/x - Step 3: Cross multiply
85,653.14x = 128,488.26 × 29,485.81 - Step 4: Simplify right side
85,653.14x = 3,788,580,471.63 - Step 5: Solve for x
x = 3,788,580,471.63/85,653.14 - Step 6: Final answer
x = 44,231.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.