Finding the Fourth Proportional to 86,403.24, 129,312.12 and 53,144.40
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Solution
The fourth proportional to 86,403.24, 129,312.12 and 53,144.40 is: 79,536.54
Step by Step Solution
- Step 1: Write the proportion equation
86,403.24 : 129,312.12 = 53,144.40 : x - Step 2: Convert to fraction form
86,403.24/129,312.12 = 53,144.40/x - Step 3: Cross multiply
86,403.24x = 129,312.12 × 53,144.40 - Step 4: Simplify right side
86,403.24x = 6,872,215,030.13 - Step 5: Solve for x
x = 6,872,215,030.13/86,403.24 - Step 6: Final answer
x = 79,536.54
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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.