Finding the Fourth Proportional to 101,645.10, 140,268.38 and 56,322.09
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Solution
The fourth proportional to 101,645.10, 140,268.38 and 56,322.09 is: 77,723.45
Step by Step Solution
- Step 1: Write the proportion equation
101,645.10 : 140,268.38 = 56,322.09 : x - Step 2: Convert to fraction form
101,645.10/140,268.38 = 56,322.09/x - Step 3: Cross multiply
101,645.10x = 140,268.38 × 56,322.09 - Step 4: Simplify right side
101,645.10x = 7,900,208,040.90 - Step 5: Solve for x
x = 7,900,208,040.90/101,645.10 - Step 6: Final answer
x = 77,723.45
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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.