Finding the Fourth Proportional to 98,454.24, 135,857.52 and 60,721.20
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Solution
The fourth proportional to 98,454.24, 135,857.52 and 60,721.20 is: 83,789.50
Step by Step Solution
- Step 1: Write the proportion equation
98,454.24 : 135,857.52 = 60,721.20 : x - Step 2: Convert to fraction form
98,454.24/135,857.52 = 60,721.20/x - Step 3: Cross multiply
98,454.24x = 135,857.52 × 60,721.20 - Step 4: Simplify right side
98,454.24x = 8,249,431,643.42 - Step 5: Solve for x
x = 8,249,431,643.42/98,454.24 - Step 6: Final answer
x = 83,789.50
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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.