Finding the Fourth Proportional to 98,223.15, 135,548.88 and 55,781.99
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Solution
The fourth proportional to 98,223.15, 135,548.88 and 55,781.99 is: 76,979.67
Step by Step Solution
- Step 1: Write the proportion equation
98,223.15 : 135,548.88 = 55,781.99 : x - Step 2: Convert to fraction form
98,223.15/135,548.88 = 55,781.99/x - Step 3: Cross multiply
98,223.15x = 135,548.88 × 55,781.99 - Step 4: Simplify right side
98,223.15x = 7,561,185,590.93 - Step 5: Solve for x
x = 7,561,185,590.93/98,223.15 - Step 6: Final answer
x = 76,979.67
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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.