Finding the Fourth Proportional to 86,686.08, 130,029.12 and 30,512.96
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Solution
The fourth proportional to 86,686.08, 130,029.12 and 30,512.96 is: 45,769.44
Step by Step Solution
- Step 1: Write the proportion equation
86,686.08 : 130,029.12 = 30,512.96 : x - Step 2: Convert to fraction form
86,686.08/130,029.12 = 30,512.96/x - Step 3: Cross multiply
86,686.08x = 130,029.12 × 30,512.96 - Step 4: Simplify right side
86,686.08x = 3,967,573,337.40 - Step 5: Solve for x
x = 3,967,573,337.40/86,686.08 - Step 6: Final answer
x = 45,769.44
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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.