Finding the Fourth Proportional to 85,903.14, 128,823.83 and 29,727.99
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Solution
The fourth proportional to 85,903.14, 128,823.83 and 29,727.99 is: 44,581.30
Step by Step Solution
- Step 1: Write the proportion equation
85,903.14 : 128,823.83 = 29,727.99 : x - Step 2: Convert to fraction form
85,903.14/128,823.83 = 29,727.99/x - Step 3: Cross multiply
85,903.14x = 128,823.83 × 29,727.99 - Step 4: Simplify right side
85,903.14x = 3,829,673,530.00 - Step 5: Solve for x
x = 3,829,673,530.00/85,903.14 - Step 6: Final answer
x = 44,581.30
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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.