Finding the Fourth Proportional to 86,098.68, 129,138.30 and 29,929.32
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Solution
The fourth proportional to 86,098.68, 129,138.30 and 29,929.32 is: 44,890.60
Step by Step Solution
- Step 1: Write the proportion equation
86,098.68 : 129,138.30 = 29,929.32 : x - Step 2: Convert to fraction form
86,098.68/129,138.30 = 29,929.32/x - Step 3: Cross multiply
86,098.68x = 129,138.30 × 29,929.32 - Step 4: Simplify right side
86,098.68x = 3,865,021,504.96 - Step 5: Solve for x
x = 3,865,021,504.96/86,098.68 - Step 6: Final answer
x = 44,890.60
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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.