Finding the Fourth Proportional to 75,861.60, 113,215.56 and 67,454.26
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Solution
The fourth proportional to 75,861.60, 113,215.56 and 67,454.26 is: 100,668.48
Step by Step Solution
- Step 1: Write the proportion equation
75,861.60 : 113,215.56 = 67,454.26 : x - Step 2: Convert to fraction form
75,861.60/113,215.56 = 67,454.26/x - Step 3: Cross multiply
75,861.60x = 113,215.56 × 67,454.26 - Step 4: Simplify right side
75,861.60x = 7,636,871,820.29 - Step 5: Solve for x
x = 7,636,871,820.29/75,861.60 - Step 6: Final answer
x = 100,668.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.