Finding the Fourth Proportional to 77,720.11, 107,263.24 and 43,730.08
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Solution
The fourth proportional to 77,720.11, 107,263.24 and 43,730.08 is: 60,352.85
Step by Step Solution
- Step 1: Write the proportion equation
77,720.11 : 107,263.24 = 43,730.08 : x - Step 2: Convert to fraction form
77,720.11/107,263.24 = 43,730.08/x - Step 3: Cross multiply
77,720.11x = 107,263.24 × 43,730.08 - Step 4: Simplify right side
77,720.11x = 4,690,629,688.78 - Step 5: Solve for x
x = 4,690,629,688.78/77,720.11 - Step 6: Final answer
x = 60,352.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.