Finding the Fourth Proportional to 85,637.12, 128,423.73 and 29,461.34
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Solution
The fourth proportional to 85,637.12, 128,423.73 and 29,461.34 is: 44,181.02
Step by Step Solution
- Step 1: Write the proportion equation
85,637.12 : 128,423.73 = 29,461.34 : x - Step 2: Convert to fraction form
85,637.12/128,423.73 = 29,461.34/x - Step 3: Cross multiply
85,637.12x = 128,423.73 × 29,461.34 - Step 4: Simplify right side
85,637.12x = 3,783,535,173.60 - Step 5: Solve for x
x = 3,783,535,173.60/85,637.12 - Step 6: Final answer
x = 44,181.02
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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.