Finding the Fourth Proportional to 85,845.14, 128,803.14 and 46,355.75
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Solution
The fourth proportional to 85,845.14, 128,803.14 and 46,355.75 is: 69,552.76
Step by Step Solution
- Step 1: Write the proportion equation
85,845.14 : 128,803.14 = 46,355.75 : x - Step 2: Convert to fraction form
85,845.14/128,803.14 = 46,355.75/x - Step 3: Cross multiply
85,845.14x = 128,803.14 × 46,355.75 - Step 4: Simplify right side
85,845.14x = 5,970,766,157.06 - Step 5: Solve for x
x = 5,970,766,157.06/85,845.14 - Step 6: Final answer
x = 69,552.76
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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.