Finding the Fourth Proportional to 85,905.30, 128,827.08 and 29,730.17
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Solution
The fourth proportional to 85,905.30, 128,827.08 and 29,730.17 is: 44,584.56
Step by Step Solution
- Step 1: Write the proportion equation
85,905.30 : 128,827.08 = 29,730.17 : x - Step 2: Convert to fraction form
85,905.30/128,827.08 = 29,730.17/x - Step 3: Cross multiply
85,905.30x = 128,827.08 × 29,730.17 - Step 4: Simplify right side
85,905.30x = 3,830,050,344.87 - Step 5: Solve for x
x = 3,830,050,344.87/85,905.30 - Step 6: Final answer
x = 44,584.56
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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.