Finding the Fourth Proportional to 88,131.51, 121,621.37 and 50,405.76
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Solution
The fourth proportional to 88,131.51, 121,621.37 and 50,405.76 is: 69,559.88
Step by Step Solution
- Step 1: Write the proportion equation
88,131.51 : 121,621.37 = 50,405.76 : x - Step 2: Convert to fraction form
88,131.51/121,621.37 = 50,405.76/x - Step 3: Cross multiply
88,131.51x = 121,621.37 × 50,405.76 - Step 4: Simplify right side
88,131.51x = 6,130,417,335.06 - Step 5: Solve for x
x = 6,130,417,335.06/88,131.51 - Step 6: Final answer
x = 69,559.88
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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.