Finding the Fourth Proportional to 85,811.13, 128,753.73 and 46,396.08
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Solution
The fourth proportional to 85,811.13, 128,753.73 and 46,396.08 is: 69,614.14
Step by Step Solution
- Step 1: Write the proportion equation
85,811.13 : 128,753.73 = 46,396.08 : x - Step 2: Convert to fraction form
85,811.13/128,753.73 = 46,396.08/x - Step 3: Cross multiply
85,811.13x = 128,753.73 × 46,396.08 - Step 4: Simplify right side
85,811.13x = 5,973,668,357.38 - Step 5: Solve for x
x = 5,973,668,357.38/85,811.13 - Step 6: Final answer
x = 69,614.14
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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.