Finding the Fourth Proportional to 85,778.64, 128,643.36 and 29,604.18
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Solution
The fourth proportional to 85,778.64, 128,643.36 and 29,604.18 is: 44,397.78
Step by Step Solution
- Step 1: Write the proportion equation
85,778.64 : 128,643.36 = 29,604.18 : x - Step 2: Convert to fraction form
85,778.64/128,643.36 = 29,604.18/x - Step 3: Cross multiply
85,778.64x = 128,643.36 × 29,604.18 - Step 4: Simplify right side
85,778.64x = 3,808,381,185.24 - Step 5: Solve for x
x = 3,808,381,185.24/85,778.64 - Step 6: Final answer
x = 44,397.78
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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.