Finding the Fourth Proportional to 98,518.09, 135,955.12 and 56,076.63
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Solution
The fourth proportional to 98,518.09, 135,955.12 and 56,076.63 is: 77,385.84
Step by Step Solution
- Step 1: Write the proportion equation
98,518.09 : 135,955.12 = 56,076.63 : x - Step 2: Convert to fraction form
98,518.09/135,955.12 = 56,076.63/x - Step 3: Cross multiply
98,518.09x = 135,955.12 × 56,076.63 - Step 4: Simplify right side
98,518.09x = 7,623,904,960.85 - Step 5: Solve for x
x = 7,623,904,960.85/98,518.09 - Step 6: Final answer
x = 77,385.84
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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.