Finding the Fourth Proportional to 86,971.12, 120,020.60 and 48,730.75
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Solution
The fourth proportional to 86,971.12, 120,020.60 and 48,730.75 is: 67,248.69
Step by Step Solution
- Step 1: Write the proportion equation
86,971.12 : 120,020.60 = 48,730.75 : x - Step 2: Convert to fraction form
86,971.12/120,020.60 = 48,730.75/x - Step 3: Cross multiply
86,971.12x = 120,020.60 × 48,730.75 - Step 4: Simplify right side
86,971.12x = 5,848,693,675.23 - Step 5: Solve for x
x = 5,848,693,675.23/86,971.12 - Step 6: Final answer
x = 67,248.69
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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.