Finding the Fourth Proportional to 98,515.09, 135,950.98 and 56,073.63
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Solution
The fourth proportional to 98,515.09, 135,950.98 and 56,073.63 is: 77,381.70
Step by Step Solution
- Step 1: Write the proportion equation
98,515.09 : 135,950.98 = 56,073.63 : x - Step 2: Convert to fraction form
98,515.09/135,950.98 = 56,073.63/x - Step 3: Cross multiply
98,515.09x = 135,950.98 × 56,073.63 - Step 4: Simplify right side
98,515.09x = 7,623,264,950.66 - Step 5: Solve for x
x = 7,623,264,950.66/98,515.09 - Step 6: Final answer
x = 77,381.70
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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.