Finding the Fourth Proportional to 70,129.20, 105,125.76 and 27,997.08
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Solution
The fourth proportional to 70,129.20, 105,125.76 and 27,997.08 is: 41,968.46
Step by Step Solution
- Step 1: Write the proportion equation
70,129.20 : 105,125.76 = 27,997.08 : x - Step 2: Convert to fraction form
70,129.20/105,125.76 = 27,997.08/x - Step 3: Cross multiply
70,129.20x = 105,125.76 × 27,997.08 - Step 4: Simplify right side
70,129.20x = 2,943,214,312.78 - Step 5: Solve for x
x = 2,943,214,312.78/70,129.20 - Step 6: Final answer
x = 41,968.46
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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.