Finding the Fourth Proportional to 98,859.07, 136,436.57 and 56,424.79
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Solution
The fourth proportional to 98,859.07, 136,436.57 and 56,424.79 is: 77,872.52
Step by Step Solution
- Step 1: Write the proportion equation
98,859.07 : 136,436.57 = 56,424.79 : x - Step 2: Convert to fraction form
98,859.07/136,436.57 = 56,424.79/x - Step 3: Cross multiply
98,859.07x = 136,436.57 × 56,424.79 - Step 4: Simplify right side
98,859.07x = 7,698,404,810.57 - Step 5: Solve for x
x = 7,698,404,810.57/98,859.07 - Step 6: Final answer
x = 77,872.52
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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.