Finding the Fourth Proportional to 98,749.76, 136,269.44 and 54,029.12
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Solution
The fourth proportional to 98,749.76, 136,269.44 and 54,029.12 is: 74,557.32
Step by Step Solution
- Step 1: Write the proportion equation
98,749.76 : 136,269.44 = 54,029.12 : x - Step 2: Convert to fraction form
98,749.76/136,269.44 = 54,029.12/x - Step 3: Cross multiply
98,749.76x = 136,269.44 × 54,029.12 - Step 4: Simplify right side
98,749.76x = 7,362,517,926.09 - Step 5: Solve for x
x = 7,362,517,926.09/98,749.76 - Step 6: Final answer
x = 74,557.32
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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.