Finding the Fourth Proportional to 85,915.58, 128,842.47 and 29,740.46
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Solution
The fourth proportional to 85,915.58, 128,842.47 and 29,740.46 is: 44,599.99
Step by Step Solution
- Step 1: Write the proportion equation
85,915.58 : 128,842.47 = 29,740.46 : x - Step 2: Convert to fraction form
85,915.58/128,842.47 = 29,740.46/x - Step 3: Cross multiply
85,915.58x = 128,842.47 × 29,740.46 - Step 4: Simplify right side
85,915.58x = 3,831,834,325.34 - Step 5: Solve for x
x = 3,831,834,325.34/85,915.58 - Step 6: Final answer
x = 44,599.99
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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.