Finding the Fourth Proportional to 81,061,449.63, 121,604,771.56 and 27,221,358.75
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Solution
The fourth proportional to 81,061,449.63, 121,604,771.56 and 27,221,358.75 is: 40,836,268.38
Step by Step Solution
- Step 1: Write the proportion equation
81,061,449.63 : 121,604,771.56 = 27,221,358.75 : x - Step 2: Convert to fraction form
81,061,449.63/121,604,771.56 = 27,221,358.75/x - Step 3: Cross multiply
81,061,449.63x = 121,604,771.56 × 27,221,358.75 - Step 4: Simplify right side
81,061,449.63x = 3,310,247,112,346,557 - Step 5: Solve for x
x = 3,310,247,112,346,557/81,061,449.63 - Step 6: Final answer
x = 40,836,268.38
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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.